Kokua

 is a Japanese musical group formed in 2006 especially to sing "Progress", the title song to the NHK program , known overseas as "The Professionals".
Members.
The group comprises Shikao Suga (vocals, composition, lyrics), Satoshi Takebe (production, lyrics, keyboard), Hirokazu Ogura (guitar), Takamune Negishi (bass), and Gota Yashiki (drums).