In the pantheon of rock originals, Patti Smith is one of the original originals. Since exploding onto the scene with 1975's breathtaking Horses, Smith's spent the past three decades honing her visionary marriage of performance-art poetry and ass-kicking rock 'n' roll. Lunkhead lore posits the 21st-century Smith as an admirable shadow of her earlier self, but fuck that: She's Patti Smith, and tonight, she's at the Showbox. (Showbox, 1426 First Ave, ticketmaster.com. 8 pm, $25, 21+.)