Singel Wielka Brytania CD Single (0523202) „Sometimes” [Radio Edit] – 3:55 „Sometimes” [Soul Solution Mid-Tempo Mix] – 3:29 „I’m So Curious” – 3:35
Wielka Brytania Promo 12" Vinyl (052320.0P) Side A: „Sometimes” [Thunderpuss 2000 Club Mix] – 8:02 Side B: „Sometimes” [Soul Solution Extended Mix] – 6:59 „Sometimes” [Thunderpuss 2000 Radio Mix] – 3:50
Europa/Australia CD Single (0550142) „Sometimes” [Radio Edit] – 3:55 „I’m So Curious” – 3:35 „Sometimes” [Soul Solution Mid-Tempo Mix] – 3:29
Europa CD (0580382) „Sometimes” [Radio Edit] – 3:55 „Sometimes” [Soul Solution Mid-Tempo Mix] – 3:29Japonia CD Single (AVCZ95121) „Sometimes” [Radio Edit] – 3:55 „...Baby One More Time” [Sharp Platinum Vocal Remix] – 8:11 „...Baby One More Time” [Davidson Ospina Club Mix] – 5:40
Stany Zjednoczone Promo CD (DUTCH19) Strona A: „Sometimes” [Thunderpuss 2000 Club Mix] – 8:02 „Sometimes” [Mike Ski’s Drum Dub] – 4:56 Strona B: „Sometimes” [Soul Solution Mid-Tempo Mix] – 3:29 „Sometimes” [ThunderDub] – 7:18 Strona C: „Sometimes” [Mike Ski’s 3AM Bass Bin Destroyer