2nd W is the second studio album released by the Hello! Project duo, W. It was also the first to be recorded (except for one song) and released after W's members, Kago Ai and Tsuji Nozomi, "graduated" from Morning Musume in August of 2004. Unlike their first album Duo U&U, which was all cover material, 2nd W contains a mix of both originals and covers of classic Shōwa period female pop duo songs. Three of the songs, the Tsunku originals Aa Ii Na! and Robo Kiss, and a cover of The Peanuts's Koi no Fuga, were released as singles in the months prior to the album.