When Roger Keith “Syd” Barrett died on July 7, 2006 at the age of 60, rock music lost one of its most notorious and fascinating enigmas. A founding member of Pink Floyd, Barrett was the primary architect of the Floyd’s first studio album (1967’s The Piper at the Gates of Dawn) and author of the band’s first three singles: “Arnold Layne,” “See Emily Play” and “Apples and Oranges.” All of these accomplishments reveal Barrett’s unique psychedelic whimsy and stellar musicianship; despite going onto even greater heights, Pink Floyd arguably never sounded the…