If the conceit of David Bowie's Ziggy Stardust album revolved around an alien rock star coming down from the heavens to blow everyone's minds, then "Moonage Daydream" is and remains that particular statement of purpose come to life. It's no surprise the song remains one of the most popular from that record; as a standard to aim at, what Bowie-influenced band or act hasn't taken that as a goal at one time or another? Certainly it doesn't hurt that the track is one of Bowie's fiercest rockers ever, on which the genius performance of guitarist Mick Ronson clearly takes the stage front and center. The song itself begins with a massive overdub of feedback and riffs, acoustic and electric both, cutting between that and Bowie's bizarre but somehow in context perfect claim: "I'm an alligator/I'm a mama-papa coming for you/I'm the space invader!/I'll be a rock and rollin' bitch for you!" As a prototype of glam rock's still-influential formula -- descending, slow chords; high singing; sexually charged if not exploded imagery; thick, fat feedback; and more -- it nails it on every level. Bowie's challenging claims throughout are at once pure fantasy and pure daring courage, tackling the presumed "'manliness" of rock with vision upon vision of anything but. Ronson's keyboards and final, swirling string arrangement, matched with a brilliant guitar solo, prove the icing on the cake, sealing "Moonage Daydream" forever as a rock classic.