絢香 – I believe

「ayaka’s History 2006-2009」

iTunes 配信中：
http://click.linksynergy.com/fs-bin/click?id=tNvpscFzLZM&subid=&offerid=94348.1&type=10&tmpid=5572&RD_PARM1=http%3A%2F%2Fitunes.apple.com%2Fjp%2Falbum%2Fayakas-history-2006-2009%2Fid330402422 .