Does a man whose invention is immortalized in song—thousands of songs—need his praises sung in a movie? He’s no weirdly charismatic obsessive like those unearthed in Errol Morris’s odd-jobs doc Fast, Cheap & Out of Control, but you can’t deny Bob “Rhymes With Vogue” Moog—whose namesake analog synth, invented in 1964, made prog, techno, and various retro-hipster acts possible—his pop-historical props. Dry interviews and soggy performances by the likes of Money Mark and Rick Wakeman of Yes don’t do much to burnish Moog’s legacy. In fact, it’s the hands-free, cosmic-quavery theremin, which Moog popularized with his kit-building biz in the ’50s, that most poetically captures the geek spiritualist, especially as he plays it alone in the woods before the credits roll.