The proper name of this artist is 坂本龍一.
Ryuichi Sakamoto (坂本龍一 Sakamoto Ryūichi, born January 17, 1952, Nakano, Tokyo, Japan) is an Oscar-, Grammy-, and Golden Globe-winning Japanese musician, composer, producer and actor, based in New York and Tokyo.
His 1999 musical composition "Energy Flow" is the first number-one instrumental single in the Japan's Oricon charts history. He was ranked at number 59 in a list of the top 100 most influential musicians compiled by HMV.
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