| Label: | Universal Island Records 174 914 4 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (7") |
| A | Happy Ending (The LA Edit) » Arranged By [Strings Arranged By]: Paul Buckmaster » Backing Vocals: Ida Falk, Studio Gospel Choir » Drums: Matt Chamberlain » Leader [Choir]: Maxi Anderson » Producer, Mixed By: Greg Wells » Producer, Piano, Keyboards, Backing Vocals: MIKA » Recorded By: Joe Chicarrelli | |
| B | Love Today (Acoustic) » Recorded By, Mixed By: Steve Masters |
| Label: | Casablanca Records none |
| Genre: | Electronic, Funk / Soul, Pop |
| Style: | House |
| Format: | CDr (Single , Promo) |
| 1 | Happy Ending (Quentin Harris Remix) » Remix: Quentin Harris | 8:31 |
| 2 | Happy Ending (Quentin Harris Instrumental) » Remix: Quentin Harris | 8:14 |
| 3 | Happy Ending (This Time Of Night Remix) | 5:39 |
| 4 | Happy Ending (Kleerup Remix) » Remix: Kleerup | 4:18 |
| 5 | Happy Ending (Trail Mix) | 4:19 |
| Label: | TIME (2) TIME 493 |
| Genre: | Electronic, Pop |
| Style: | House |
| Format: | Vinyl (12") |
| A1 | Happy Ending (Quentin Harris Remix) » Remix: Quentin Harris | |
| A2 | Relax (Take It Easy) (Dennis Cristopher Vocal Mix) » Remix: Dennis Cristopher | |
| B1 | Happy Ending (The LA Edit) | |
| B2 | Happy Ending (Kleer Up Remix) » Remix: Kleer Up | |
| B3 | Lollipop (Fred Deakin Club Mix) » Remix: Fred Deakin |
| Label: | Casablanca Records 174 914 3 |
| Genre: | Electronic |
| Style: | House, Electro |
| Format: | CD (Single) |
| 1 | Happy Ending (The LA Edit) » Arranged By [Strings]: Paul Buckmaster » Backing Vocals: Ida Falk Winland, MIKA » Drums: Matt Chamberlain » Leader [Studio Gospel Choir Led]: Maxin Anderson » Mixed By: Greg Wells » Piano, Keyboards: MIKA » Producer: Greg Wells, MIKA » Recorded By: Joe Chicarrelli » Written-By: MIKA | 3:35 |
| 2 | Grace Kelly (Acoustic) » Producer: Greg Wells, MIKA » Written-By: Dan Warner, Jodi Marr, John Merchant, MIKA | 3:06 |
| 3 | Happy Ending (Kleerup Remix) » Remix, Producer [Additional Production]: Kleerup | 4:16 |
| Label: | Casablanca Records 1544432 |
| Genre: | Pop |
| Style: | Ballad |
| Format: | CD (Single) |
| 1 | Happy Ending (The L.A. Edit) | |
| 2 | Grace Kelly (Acoustic) |
| Label: | Universal 175 443 2 |
| Genre: | Electronic |
| Style: | House, Electro |
| Format: | CD (Single) |
| 1 | Happy Ending [The LA Edit] | 3:35 |
| 2 | Grace Kelly [Acoustic] » Written-By: Dan Warner, Jodi Marr, John Merchant | 3:06 |