Don't Don (Korean: 돈 돈!) is the second studio album by Korean boy band Super Junior. It was released by SM Entertainment on September 20, 2007 in South Korea. This is the group's first album as thirteen members, with the addition of Kyuhyun a year prior. Slightly different from their first album, this album focuses on more different kinds of pop melodies, most notably on those that approach alternative rock, modern R&B and retro dance-pop, with almost all tracks in the album containing string sections. 60,000 copies were sold within the first week of release and 164,058 copies were sold by the end of December, and was certified as the second best-selling album of 2007, with the first being SG Wannabe's fourth studio album, "The Sentimental Chord."