B'z is a Japanese rock duo, consisting of guitarist, composer and producer Tak Matsumoto and vocalist and lyricist Koshi Inaba.
B'z is one of the best-selling music artists in the world and the best-selling in their native Japan, having released 46 consecutive No. 1 singles, 25 No. 1 albums and sold more than 80 million records worldwide. More: en.wikipedia.org.