Kicked out of Hawkwind in 1975 after spending five days in a Canadian prison for drug charges, Lemmy Kilmister went on to form Motörhead, a groundbreaking speed-metal band that influenced an entire movement of imitators. More than four and a half decades after Lemmy joined his first rock band, his distinct vocal rasp and rollicking guitar rock still pack a wallop. Records like Overkill, Ace of Spades, and No Sleep 'til Hammersmith still blow minds like they did in the late 1970s and early '80s. Why? BECAUSE THEY'RE THAT GOOD. (Showbox Sodo, 1700 First Ave, 800-745-3000, 7 pm, $32–$35, all ages)