One Piece-We Are

"We Are!" by Hiroshi Kitadani (eps 1-47)


Hiroshi Kitadani (きただにひろし, Kitadani Hiroshi?, real name 北谷 洋, born August 24, 1968) is a Japanese vocalist who is prominent as an anison, or a musician who primarily performs theme songs and other songs in anime. He also works behind the scenes of many songs. He currently works with JAM Project, but has also been a part of Lapis Lazuli and Stagger and does solo work. He is known for singing "We Are!" the first opening theme of One Piece, "We Are the Heroes" from the Anime Daigunder and the eponymous first opening theme of Madan Senki Ryukendo.
He also play bass.[Wikipedia]