In the late 60's, the flower power movement was crushed with the debut of a louder and more aggressive style of music. New bands like Black Sabbath, Led Zeppelin, Deep Purple and others led the way.
Women have sung on jazz, pop and soul tracks since the 1930s, but when it came to rock; however, there were few women in the 1950s who wrote and performed their own songs.
The sound of psychedelic rock involved electronic instruments, guitar effects, oriental instruments, unconventional song structures, lyrics that referenced drugs or fantasy books, with extended instrumental sections.
