ノルウェーの森
In the 1960s, renowned Western acts such as The Yardbirds, The Beatles, The Rolling Stones, The Doors and The Byrds were notably influenced by Indian classical music as a way of reinforcing the psychedelia in their music. While jazz musicians, notably John Coltrane, had ventured into Indian music and spiritualism (see Indo jazz, Sitar in jazz, and Jazz in India), the influence of Indian classical music on 1960s rock began in earnest with George Harrison's Ravi Shankar inspired raga rock song "Norwegian Wood (This Bird Has Flown)" in 1965 and The Beatles' very public sojourn with the Maharishi Mahesh Yogi at his ashram in Rishikesh in 1968, following the release of "Sgt. Pepper's Lonely Hearts Club Band" in 1967. Raga rock led to the development of psychedelic rock, which in turn laid the foundations for heavy metal music.