- "Sometimes" — 3:55
- "Sometimes" — 3:29
- "Sometimes" (Radio Edit) — 3:55
- "...Baby One More Time" — 8:11
- "...Baby One More Time" — 5:40
- "Sometimes" — 3:55
- "Sometimes" — 3:29
- "I'm So Curious" – 3:35
- "Sometimes" — 3:55
- "Sometimes" — 8:02
- "Sometimes" — 3:29
- "Sometimes" — 4:27
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- "Sometimes" — 8:02
- "Sometimes" — 4:56
- "Sometimes" — 3:29
- "Sometimes" — 7:18
- "Sometimes" — 9:34
- "Sometimes" — 3:55
- "Sometimes" — 6:51
- "Sometimes" — 4:27
- The Singles Collection Boxset Single
- "Sometimes" (Radio Edit) – 3:55
- "I'm So Curious" – 3:35
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