See 2 Thursday. Tonight: vintage rock by Billie Mack and the Juke Joint Johnnies (Palmer Commons), the local country-folk & Americana ensemble Widdershins (E. Middle), classical music by the G-Fours String Quartet (Collins off Main), the versatile country & classic rock cover band Dense White Smoky Boys (Clocktower Gazebo), and the 90s rock and punk cover duo Ben & Dave (Rumpus Room). 6:30–8:30 p.m.