OSAKA -- Solar and wind power generators were probably the last thing the audience came to see when they went to an open-air concert by the rock group Glay in summer 2001.

But the event, held in Ishikari, Hokkaido, not only gave them the opportunity to enjoy music but also to learn about renewable energy via the generating devices displayed at a booth at the concert arena.

It was the first project undertaken by Artists' Power, a group of musicians and artists promoting alternative energy that was launched by renowned musician Ryuichi Sakamoto and Glay guitarist Takuro.