Battle Spirits: Shonen Gekiha Dan

JAM Project ("JAM" standing for "Japan Animationsong Makers") is an anime music genre (or anison) "supergroup" based in Japan, originally founded on July 19, 2000 by famous 1970s theme song artist Ichirou Mizuki. The group is composed of many vocal artists well known in the genre; aside from the many anime and video game theme songs that this group has performed together, each member is famous for his or her own solo performances of anime-related music.

As a group, they are perhaps best known for their themes for the Super Robot Wars series of video games.

The group has also moved into the realm of live-action theme songs by performing opening and insert themes for the recent tokusatsu show GARO.

Recently, the group joined with Kageyama's old band Lazy to form the supergroup ULTIMATE LAZY for MAZINGER, to perform the opening theme (actually, the old Lazy song Kanjite Knight) for Shin Mazinger Shougeki! Z Hen.

Source: Wikipedia