Into the New World

Released: August 2, 2007
Language: Korean
Label: SM Entertainment
Copies sold: 42,861 (South Korea)

1. Into the New World (Korean: 다시 만난 세계) — 04:25
2. Beginning — 03:03
3. Perfect for you (Korean: 소원) — 03:14
4. Into the New World (Inst.) — 04:25

หมายเหตุ: Debut

Into the New World (Remix)

Released: September 12, 2007
Language: Korean
Label: SM Entertainment

1. Into the New World (Remix) — 04:30

หมายเหตุ: Remix single & Digital release

Kissing You (Rhythmer Remix Vol.1)

Released: March 11, 2008 [22][23]
Language: Korean
Label: SM Entertainment

1. Kissing You (Skool Rock Remix) (by 정구현) — 03:06
2. Kissing You (House Remix) (by 기현석) — 02:58
3. Kissing You (Groovy Candy Remix) (by Philtre) — 03:12
4. Kissing You (Funk Remix) (by shoon) — 03:18

หมายเหตุ: Remix single & Digital release

Oppa Nappa

Released: April 7, 2008
Language: Korean
Label: SM Entertainment

1. Oppa Nappa (Hangul: 오빠 나빠) — 03:45

by Jessica, Tiffany, Seohyun
หมายเหตุ: Digital release

Haptic Motion

Released: May 8, 2008
Language: Korean
Label: SM Entertainment

1. Haptic Motion — 01:29

by Taeyeon, Jessica, Sunny, SeoHyun
หมายเหตุ: Anycall promotion & Digital release

Hahaha

Released: April 15, 2009
Language: Korean
Label: SM Entertainment

1. Hahaha

หมายเหตุ: Samsung’s HaHaHa Song Campaign & Digital release

ที่มา: http://en.wikipedia.org/wiki/Girls%27_Generation_discography