NEW RIFFS | Winter may be in its final lap, but the season of metal never ends. Tonight brings SCOTT IAN, the former guitarist of Anthrax, who tells stories about the many thousands of lives he’s lived as a member of one of the most popular metal bands in arguably the most nihilistic American decade. Who knows, he might even play a few riffs. With DAVE HARRIS of the band Planeside. 9 pm; $20-24 at the Port City Music Hall. 207.899.4990.