There is more than one artist with this name In chronological order: 1) Gandalf were an influential late 1960s psychedelic rock group. 2) Mid-70s blues inspired Swedish progressive rock band. 3) Austrian new age composer/musician. Real name: Heinz Strobl. 4) Finnish melodic death metal band. 1) Gandalf were an influential late 1960s psychedelic rock group. They were an American band originally called the Rahgoos and formed by Peter Sando, Frank Hubach, Bob Muller and Davy Bauer.