Stomu Yamashta (or Yamash'ta), born Tsutomu Yamashita (山下勉 Yamashita Tsutomu, 15 March 1947) is a Japanese percussionist, keyboardist and composer. He is best known for pioneering and popularising a fusion of traditional Japanese percussive music with Western progressive rock music in the 1960s and 1970s.
In the latter part of the 1970s, he led the supergroup "Go" with Steve Winwood, Al Di Meola, Klaus Schulze, and Michael Shrieve.
Yamash'ta was born in Kyoto, and studied music at Kyoto University, Juilliard School of Music, and Berklee College of Music, and has also lectured in music. His innovation and acrobatic drumming style earned him many accolades. In the 1960s he performed with Thor Johnson, Toru Takemitsu, and Hans Werner Henze amongst others. He changed his name from Tsutomu Yamashita to the phonetic Stomu Yamash'ta and in 1969 gained worldwide recognition during a concert with Seiji Ozawa and the Chicago Symphony Orchestra. Time reviewed the concert declaring 'the star of the evening was Stomu Yamash'ta who stole the show with his virtuoso performance', and when it was over the audience gave him a five-minute standing ovation.
At the turn of the 1970s he worked with Peter Maxwell Davies and brought the Red Buddha Theatre company from Japan to Europe, acting as their director, producer and composer, writing and performing in the multi-media event The Man From The East, with Morris Pert's Come To The Edge providing the musical backing.