Jpop: N'Shukugawa Boys (N'夙川BOYS)

Founded in 1997, the trio N'Shukugawa uses contrasting vocal with nice effect. Home page here, and some more here.

• N'Shukogawa Boys - Magic Planet (プラネットマジック)
• N'Shukugawa Boys - 24 hour
• N'Shukugawa Boys - Homework
• N'Shukugawa Boys - Monogatari wa chito? Fuantei (物語はちと？不安定)
• N'Shukagawa Boys - Freedom