This tavern, and music and teaching space, at the fringes of Carroll Gardens and Red Hook is a fun, DIY kind of affair, where the beer's cold and you can usually catch a bluegrass, country, klezmer or ukulele show. There are freebies like regular open-mic nights (Tuesdays) and old-school blues and folk at Roots 'n' Ruckus (Wednesdays); consult the website.
Entry to some live-music shows costs around $10. Casual music classes, including folk lessons for kids, round out the varied program.