


















| Label: | EMI USA E2-56195 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Maxi-Single) |
| 1 | So Hard (Extended Dance Mix) | 6:30 |
| 2 | So Hard (Single) | 3:56 |
| 3 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| 4 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| 5 | Paninaro (12" Mix) » Remix: David Jacob, Pet Shop Boys | 8:40 |
| Label: | EMI USA V-56194 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (12" , 33 ⅓ RPM) |
| A1 | So Hard (Extended Dance Mix) | 6:30 |
| A2 | So Hard (Single) | 3:56 |
| B1 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| B2 | It Must Be Obvious » Engineer, Mixed By: Pete Schweir | 4:21 |
| Label: | EMI CDP 560-20 4092 2 |
| Genre: | Electronic |
| Style: | Electro, Synth-pop, Ambient |
| Format: | CD (Maxi-Single) |
| 1 | So Hard (The KLF Versus Pet Shop Boys) » Producer [Original Track Produced By]: Harold Faltermeyer, Pet Shop Boys | 5:27 |
| 2 | It Must Be Obvious (UFO Mix) » Producer [Original Track Produced By]: Pet Shop Boys | 9:22 |
| Label: | Parlophone 2040626 |
| Genre: | Electronic |
| Style: | House, Synth-pop |
| Format: | Vinyl (12" , 45 RPM , Single) |
| A1 | So Hard (Extended Dance Mix) » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 6:30 |
| A2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 4:21 |
| B1 | So Hard (Dub Mix) » Edited By: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 7:30 |
| Label: | Parlophone CDP 560-20 4062 2 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Maxi-Single) |
| 1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:56 |
| 2 | It Must Be Obvious » Mixed By, Engineer: Pete Schwier » Producer: Pet Shop Boys | 4:21 |
| 3 | So Hard (Extended Dance Mix) » Edited By: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 6:30 |
| Label: | EMI 060 20 4177 6 |
| Genre: | Electronic |
| Style: | House, Synth-pop |
| Format: | Vinyl (12" , 45 RPM , Maxi-Single) |
| A | So Hard (Red Zone Mix) | 6:59 |
| B1 | So Hard (12" Mix) | 5:54 |
| B2 | So Hard (Radio Mix) | 3:00 |
| Label: | Parlophone 2040627 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier |
| Label: | Parlophone 12RX6269 |
| Genre: | Electronic |
| Style: | Abstract, Synth-pop |
| Format: | Vinyl (12" , Single , 45 RPM) |
| A | So Hard (The KLF Versus Pet Shop Boys) | 5:27 |
| B | It Must Be Obvious (UFO Mix) | 9:22 |
| Label: | Parlophone 2040622 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Single) |
| 1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:59 |
| 2 | It Must Be Obvious » Mixed By, Engineer: Pete Schwier » Producer: Pet Shop Boys | 4:24 |
| 3 | So Hard (Extended Dance Mix) » Edited By: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 6:37 |
| Label: | Parlophone CDP 560- 20 4177 2 |
| Genre: | Electronic |
| Style: | House, Synth-pop |
| Format: | CD (Maxi-Single) |
| 1 | So Hard (12'' Mix) | 6:27 |
| 2 | So Hard (Radio Mix) | 3:38 |
| 3 | So Hard (Red Zone Mix) | 7:46 |
| 4 | So Hard (Eclipse Mix) | 4:02 |
| Label: | Parlophone 12RDJ 6269 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (12" , Promo , 45 RPM) |
| A | So Hard (Extended Dance Mix) | 6:30 |
| B | So Hard (Dub Mix) | 7:30 |
| Label: | EMI USA SPRO 04690 |
| Genre: | Electronic |
| Style: | House |
| Format: | Vinyl (12" , Single , 33 ⅓ RPM , Promo) |
| A1 | So Hard (12" Remix) | 6:20 |
| A2 | So Hard (Radio Mix) | 3:25 |
| B1 | So Hard (Red Zone Mix) | 7:42 |
| B2 | So Hard (Eclipse Mix) | 4:00 |
| Label: | EMI America SPRO 04685 |
| Genre: | Electronic |
| Style: | Synth-pop, Experimental, Ambient |
| Format: | Vinyl (12" , Promo , 33 ⅓ RPM) |
| A1 | So Hard (The KLF Vs. Pet Shop Boys) » Producer [Original Track Produced By]: Harold Faltermeyer » Remix: KLF, The | 5:26 |
| A2 | So Hard (Single) » Producer [Original Track Produced By]: Harold Faltermeyer | 3:56 |
| B | It Must Be Obvious (UFO Mix) » Remix: KLF, The | 9:22 |
| Label: | EMI USA DPRO-4650 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Maxi-Single , Promo) |
| 1 | So Hard (Single) | 3:56 |
| 2 | So Hard (9" Edit) | 5:00 |
| 3 | So Hard (Extended Dance Mix) | 6:30 |
| 4 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| Label: | Parlophone RDJ 6269 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Promo) |
| A | So Hard » Additional Programming: Dominic Clarke » Co-producer: Harold Faltermeyer » Mixed By: Julian Mendelsohn | 3:56 |
| B | It Must Be Obvious » Mixed By: Pete Schwier » Programming: Dominic Clarke | 4:21 |
| Label: | EMI 060-20 4092 6 |
| Genre: | Electronic |
| Style: | House, Synth-pop, Experimental, Ambient |
| Format: | Vinyl (12" , 45 RPM , Maxi-Single) |
| A | So Hard (The KLF Versus Pet Shop Boys) | 5:27 |
| B | It Must Be Obvious (UFO Mix) | 9:22 |
| Label: | Parlophone 006 20 4062 7 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelssohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:58 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:23 |
| Label: | Parlophone 060-20 4062 6 |
| Genre: | Electronic |
| Style: | House, Synth-pop |
| Format: | Vinyl (12" , 45 RPM , Maxi-Single) |
| A1 | So Hard (Extended Dance Mix) » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 6:37 |
| A2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 4:23 |
| B | So Hard (Dub Mix) » Edited By: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional Programming]: Dominic Clarke | 7:33 |
| Label: | EMI-Odeon, S.A. 052 2040626 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop, Disco |
| Format: | Vinyl (12") |
| A1 | So Hard (Extended Dance Mix) » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 6:30 |
| A2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 4:21 |
| B | So Hard (Dub Mix) » Edited By: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 7:33 |
| Label: | EMI USA 4JM-50329 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | Cassette (Single) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:58 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:23 |
| Label: | EMI France 2040622 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Single) |
| 1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:56 |
| 2 | It Must Be Obvious » Mixed By, Engineer: Pete Schwier » Producer: Pet Shop Boys | 4:21 |
| 3 | So Hard (Extended Dance Mix) » Edited By [Uncredited]: Danton Supple » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 6:30 |
| Label: | EMI USA 4V-56194 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Cassette (Maxi-Single) |
| A1 | So Hard (Extended Dance Mix) | 6:30 |
| A2 | So Hard (Single) | 3:56 |
| B1 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| B2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| Label: | EMI (France) 2040626 |
| Genre: | Electronic |
| Style: | Synth-pop, Disco |
| Format: | Vinyl (12") |
| A1 | So Hard (Extended Dance Mix) » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 6:30 |
| A2 | It Must Be Obvious » Mixed By: Pete Schwier | 4:21 |
| B | So Hard (Dub Mix) » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 7:21 |
| Label: | Parlophone 9951 220 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (12" , Promo , 45 RPM , 33 ⅓ RPM , Stereo) |
| A | So Hard | 3:58 |
| B | So Hard | 3:58 |
| Label: | EMI 700 912 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , Promo) |
| A | So Hard (Tan Dificil) | 5:00 |
| B | So Hard (Tan Dificil) | 5:00 |
| Label: | Parlophone 2040627 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier |
| Label: | Parlophone 2040624 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | Cassette (Single) |
| A1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:58 |
| A2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:23 |
| B1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:58 |
| B2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:23 |
| Label: | Toshiba EMI Ltd TODP-2203 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Mini , Single) |
| 1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 3:56 |
| 2 | It Must Be Obvious » Mixed By, Engineer: Pete Schwier » Producer: Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 4:21 |
| Label: | EMI USA E2-56195 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (12" , Maxi-Single) |
| A1 | So Hard (Extended Dance Mix) | 6:30 |
| A2 | So Hard (Single) | 3:56 |
| A3 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| B1 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| B2 | Paninaro (12" Mix) » Remix: David Jacob, Pet Shop Boys | 8:40 |
| Label: | EMI USA E-USA-89x016-7 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single) |
| A | So Hard | 3:56 |
| B | So Hard | 3:56 |
| Label: | EMI Music Group Australasia 2481-7 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 3:56 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys » Programmed By [Additional]: Dominic Clarke | 4:21 |
| Label: | SBK Management none |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Cassette (Promo) |
| A1 | So Hard (Master) | |
| A2 | So Hard (12" Master) |
| Label: | EMI none |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Cassette (Test Pressing) |
| 1 | So Hard (Master) | |
| 2 | So Hard (12" Master) | |
| 3 | It Must Be Obvious (Master) |
| Label: | EMI Music Group Australasia TC-2481-4 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Cassette (Single) |
| A1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:56 |
| A2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:21 |
| B1 | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:56 |
| B2 | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:21 |
| Label: | Parlophone CDP 560- 20 4177 2 |
| Genre: | Electronic |
| Style: | House, Synth-pop |
| Format: | CD (Maxi-Single) |
| 1 | So Hard (12'' Mix) | 6:27 |
| 2 | So Hard (Radio Mix) | 3:38 |
| 3 | So Hard (Red Zone Mix) | 7:46 |
| 4 | So Hard (Eclipse Mix) | 4:02 |
| Label: | Valentim De Carvalho 2040627 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 3:56 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| Label: | EMI France 2040627 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 3:56 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| Label: | EMI Italiana S.p.A. 06 2040627 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 3:56 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier | 4:21 |
| Label: | Parlophone r6269 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | So Hard » Engineer: Brian Reeves » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer, Pet Shop Boys | 3:56 |
| B | It Must Be Obvious » Engineer, Mixed By: Pete Schwier » Producer: Pet Shop Boys | 4:21 |
| Label: | EMI ITALIANA S.p.A. 14 2040626 |
| Genre: | Electronic |
| Style: | Synth-pop, Disco |
| Format: | Vinyl (12") |
| A1 | So Hard (Extended Dance Mix) » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 6:30 |
| A2 | It Must Be Obvious » Mixed By: Pete Schwier | 4:21 |
| B | So Hard (Dub Mix) » Mixed By: Julian Mendelsohn » Producer: Harold Faltermeyer | 7:21 |
| Label: | Capitol Records-EMI Of Canada CI 75255 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | Vinyl (12" , 33 ⅓ RPM) |
| A1 | So Hard (Extended Dance Mix) | 6:30 |
| A2 | So Hard (Single) | 3:56 |
| B1 | So Hard (Dub) » Edited By: Danton Supple | 7:30 |
| B2 | It Must Be Obvious » Engineer, Mixed By: Pete Schweir | 4:21 |
| Label: | EMI 052 20 4092 6 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | Vinyl (12" , 45 RPM) |
| A | So Hard-The Versus Pet Shop Boys » Remix: KLF, The | 5:26 |
| B | It Must Be Obvious (Ufo Mix) » Remix: KLF, The | 9:22 |