Noona, You're So Pretty) is the debut single by South Korean boy band Shinee, recorded for the extended play of the same name.

[6] "Replay" is a contemporary R&B song composed by The Heavyweights, who co-arranged with Yoo Young-jin, while the lyrics was written by Young-hu Kim.

[13] Writing in 2008, Jo I-seul of IZM described "Replay" as a "trendy" and "high-quality" song, but did not find it lived up to the originality implied by Shinee's "contemporary band" label.

It was named one of the top 100 K-pop songs of all time by a panel of 35 music critics and industry experts in association with Melon and the Seoul Shinmun.

[15] According to music critic Kim Yun-ha, "Replay" laid the foundation for Shinee's "unique identity", and carries the "mint-coloured freshness" that the public associates with the group.

[16] Park Chang-young of Maeil Business Newspaper stated that "Replay" "opened a new chapter in idol music".

[23] Shinee celebrated its release with a live showcase at Abbey Road Studios in London, becoming the first Asian artists to perform there.