Single album in two years, indicating a new departure 'Raul (Roul)' and the start of the activity to the more mature and experimental music 07 artificial mixed a cappella group members, including the newly-built configuration! Crystallization than nine minutes impression of the existing built into 'a cappella' stylish sound like you are listening to the title track of this single go 'Woo' is all made ??of arpeggios, and melody with repetitive called 'Woo ~' the theme of the considered and clean chorus add more fun at the track. The lyrics put them in a situation to feel sad when you crush a friend hide a heart. Once every two months, it is worth the music of the future constantly ahead of the release of this album, looking forward to the start.