As the book of Spielberg states, when aliens eventually decide we're worthy of contact, they'll do it through music (and mashed-potato sculptures). So it's not shocking that earthly musicians already have a special relationship with little green men. (This obviously has nothing to do with the equally special relationship that musicians have with drugs.) Here's a brief history of musical space cases.
1936: Jazz composer Sun Ra undergoes a "spiritual enlightening" in which he envisions being snatched by aliens and transported to Saturn. Ra would spend the rest of his career making eccentric music—featuring lots of cosmic noodling—to save humanity.
1968: Sammy Hagar is allegedly contacted multiple times by aliens, who download information from his brain. Sammy dubs them "the Nine" and later names his publishing company Nine Music.
1969: George Clinton and Funkadelic claim they're aliens from another planet. And that they've already visited Mars on the mother ship to give Martians the funk.
1972: David Bowie enters his Ziggy Stardust phase, in which he portrays an alien trying to communicate with humans through the power of glam rock.
1974: Aliens reportedly visit New York and give John Lennon a strange metallic egg. Unfortunately, the only source for this story is debunked telepathic spoon-bender Uri Geller.
2001: In a documentary, DJ Qbert attributes his creative inspiration to alien life. Resulting in music that is both record- and head-scratching.
2008: Lady Gaga dresses like an alien. Though even aliens wouldn't sport a dress made of raw meat.
2010: Yo-Landi Vi$$er of Die Antwoord is clearly the love child of an alien-human tryst—or at least doesn't mind a frightened yet strangely attracted world wondering where the hell she came from.
2010: Scientists intercept alien transmissions consisting of remixes of the infamous "Greetings from Earth" phonograph records affixed to the Voyager spacecrafts. (Suspiciously, the "scientists" are also on the same record label as pranksters Negativland.)