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Dänemark| Label: | Harvest HAR 5179 |
| Genre: | Rock, Pop |
| Style: | Pop Rock, Prog Rock |
| Format: | Vinyl (7") |
| A | Showdown » Written By: Jeff Lynne | 4:11 |
| B | Roll Over Beethoven » Written By: Chuck Berry | 4:33 |
| Label: | Harvest 12 HAR 5179 |
| Genre: | Rock |
| Style: | Symphonic Rock, Pop Rock, Classic Rock |
| Format: | Vinyl (12" , 45 RPM , Reissue) |
| A | Showdown | |
| B | Roll Over Beethoven |
| Label: | Harvest 5C K052Z-06855 |
| Genre: | Pop, Rock |
| Style: | Art Rock, Synth-pop, Symphonic Rock |
| Format: | Vinyl (12" , Maxi-Single , 45 RPM) |
| A | Showdown | 4:07 |
| B | Roll Over Beethoven | 6:57 |
| Label: | Harvest HAR 5121 |
| Genre: | Electronic, Rock |
| Style: | Art Rock, Symphonic Rock, Prog Rock |
| Format: | Vinyl (7" , Single , Reissue) |
| A | Showdown » Written-By: Lynne | |
| B | Roll Over Beethoven » Written-By: Berry |
| Label: | CBS ZS8 512 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (7" , Single , Reissue) |
| A | Roll Over Beethoven | |
| B | Showdown |
| Label: | Harvest PSLP 213 |
| Genre: | Rock |
| Style: | Symphonic Rock, Pop Rock, Classic Rock |
| Format: | Vinyl (12" , 45 RPM , Promo , Reissue) |
| A | Showdown | |
| B | Roll Over Beethoven |
| Label: | EMI 1A 006-06855 |
| Genre: | Rock |
| Style: | Classic Rock |
| Format: | Vinyl (7" , 45 RPM , Single , Reissue) |
| A | Roll Over Beethoven | 4:33 |
| B | Showdown | 4:07 |
| Label: | United Artists Records XW-513-X |
| Genre: | Rock |
| Style: | Rock & Roll |
| Format: | Vinyl (7" , Single , 45 RPM , Reissue) |
| A | Roll Over Beethoven » Written-By: C. Berry | 4:30 |
| B | Showdown » Written-By: J. Lynne | 3:49 |
