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Dänemark| Label: | Polydor 2726503 |
| Genre: | Electronic |
| Style: | Synth-pop |
| Format: | CD (Single) |
| 1 | Echo » Arranged By [Vocals]: Viktoria Hansen » Backing Vocals: Viktoria Hansen » Guitar: Alan Nglish, Tim Vandersrocks » Mixed By: Rob Orton » Producer, Keyboards, Programmed By: Alan Nglish » Recorded By: Scott McCormick » Written-By: Alan Kasiyre, Viktoria Hansen | 3:25 |
| 2 | Love Shy » Recorded By, Programmed By, Producer, Mixed By: David Hearn, Rob Cass » Written-By: David W Hearn, Girls Can't Catch, Rob Cass | 2:45 |
| Label: | Polydor 2728244 |
| Genre: | Electronic, Pop |
| Style: | Synth-pop |
| Format: | CD (Maxi-Single) |
| 1 | Echo » Backing Vocals, Arranged By [Vocals]: Viktoria Hansen » Guitar: Tim Vandersrocks » Keyboards, Programmed By, Guitar: Alan Nglish » Mixed By: Rob Orton » Producer: Alan Nglish » Recorded By: Scott McCormick » Written-By: Alan Kasiyre, Viktoria Hansen | 3:26 |
| 2 | Interview With Kimberley Walsh (Part 2) » Interviewer: Kimberley Walsh | 12:00 |
| 3 | Behind The Scenes At The Jonas Brothers Tour (Video) | |
| 4 | Echo (Video) |
| Label: | Fascination none |
| Genre: | Electronic, Pop |
| Style: | Europop, Electro |
| Format: | CD (Maxi-Single , Promo) |
| 1 | Echo (Radio Edit) | 3:24 |
| 2 | Echo (Nu Addiction Radio Edit) | 2:57 |
| 3 | Echo (Love II Infinity Radio Edit) | 3:22 |
| 4 | Echo (Pegasus & Rockchild Remix Main Mix) | 5:03 |
| 5 | Echo (Ruff Loaderz Radio Edit) | 3:22 |
| 6 | Echo (Tigermoth Remix) | 3:48 |
| 7 | Echo (Nu Addiction Club Mix) | 7:01 |
| 8 | Echo (Love II Infinity Club Mix) | 6:53 |
| 9 | Echo (Ruff Loaderz Club Mix) | 6:03 |
| 10 | Echo (Nu Addiction Dub) | 6:58 |
| 11 | Echo (Love II Infinity Dub Mix) | 6:52 |
| 12 | Echo (Pegasus & Rockchild Remix Instrumental) | 4:57 |
| Label: | Polydor GCCECHO |
| Genre: | Electronic, Pop |
| Style: | Europop, Electro |
| Format: | CD (Single , Promo) |
| 1 | Echo | 3:23 |
