Easily one of the most underrated rock bands ever, UFO are a still active English band, but their only real notable output came in the mid to late 1970s when a young German virtuoso named Michael Schenker played guitar for them. Starting with Schenker's arrival in 1974, UFO solidified its classic lineup and began a run of five albums that masterfully mixed blues, rock and roll, and early heavy metal. Vocalist Phil Moog had as much range as Robert Plant, but he also had a dirtier, less wailing sound to his voice, which lent itself well to the darker guitar riffs and harmonies that Schenker was creating. While each album remains a classic, Force It and Lights Out remain the best 'go to' albums for a UFO lesson. "Mother Mary", "Doctor, Doctor", "Lights Out"… there are too many classics to list from this band's heyday. In particular, the epic power ballad "Love to Love" is every bit as good as Stairway to Heaven, if not more so. Sadly, after Schenker's departure in 1978 the band never recaptured the magic that made them so special.