George Harrison during the 1960s to help him out of the “shadow” of John Lennon and Paul McCartney. The Scottish singer-songwriter, known for his hits ‘Mellow Yellow’, ‘Sunshine Superman’ and ‘Hurdy Gurdy Man’, regularly spent time with The Beatles during the peak of their success. Speaking to Record Collector Magazine (via Music News), he said: “I became George’s mentor for songwriting.