A digital single with "Twins (Knock Out)", "You Are the One", and three additional tracks were released online on November 8, followed by the release of their debut album Twins on December 6, 2005.
Sebuah single digital yang terdiri dari "Twins (Knock Out)", "You Are the One", dan tiga lagu tambahan dirilis secara daring pada tanggal 8 November, diikuti perilisan album debut mereka Twins pada tanggal 6 Desember 2005.