what you haven't Lisa ? o_O
they have a lot of awesome ballads like Osaka Rainy Blues , Osaka Romaneque & for the albums , I LOVE LOVE LOVE PUZZLE (YAY for Saito Kazuyoshi
) , My Last Train from their PUZZLE album
but anyway , LQ of Hitotsu no Uta -
http://community.livejournal.com/kanjani8/2343572.html