Want to meet the biggest legends in Japan’s music industry? You might not have heard of them, but these icons have been in the business for years and all are at the top of their game. From idol Jin Akanishi’s steamy pop appeal in “Test Drive,” to rocker Miyavi’s virtuosic guitar skills and the soaring melodies of L’arc en Ciel live at Madison Square Garden, none will leave you with the slightest question about how they made it to the top.