Late American musician Frank Zappa was a clever, complex, "one-of-a-kind" artist. According to music critic William Ruhlmann:Composer, guitarist, singer, and bandleader Frank Zappa was a singular musical figure during a performing and recording career that lasted from the 1960s to the '90s. In statement and in practice, Zappa was an iconoclastic defender of the freest possible expression of ideas. And most of all, he was a composer far more ambitious than any other rock musician of his time and most classical musicians, as well. This image was taken when Zappa and his band, The Mothers of Invention, came to Sydney in 1973.