2nd W is the second album by the Hello! Project duo W and their first album recorded and released after its members, Ai Kago and Nozomi Tsuji, "graduated" from Morning Musume in August 2004.Unlike their first album, Duo U&U, which was all cover material, 2nd W contains a mix of originals (composed by mentor and Hello! Project founder Tsunku) and covers of classic Shōwa period female pop duo songs.