The best karaoke bars in San Francisco

This Irish sports pub packs an enthusiastic crowd for its Tuesday night song sessions. Attendees seem to skew younger, but there are a handful of people who can probably remember the summer of '69, not to mention Bryan Adams' lyrics. This makes for a smattering of new and nostalgic: a welcome quality for any late-night sing-a-long. Rest your voice while enjoying a beer on the heated patio or by shooting a round at one of the bar's two pool tables.

Party like a sailor with just one more day on land at this rowdy nautical-themed dive bar. "Dive" as in tiny and grungy—though there's a fair amount of beach paraphernalia lining the walls (not to mention the head of some large, horned animal). A college crowd gives Tuesday night karaoke a raucous vibe, but the cacophony is part of the fun. The place is divided in two sections, so you can ease back and forth between the singing action.

Karaoke is a time to be yourself, so at El Rio on Wednesdays, don't be afraid to whip out that freak flag and wave it around the dance floor. The friendly bar is a Mission staple, attracting an eclectic crowd of all ages, ethnicities and sexual orientations. Add a fog machine, mini disco ball and mic, and you've got the makings of a party. Like it says on the website: There's no dress code, but wigs and tutus are strongly preferred.

Forget softball league—try Karaoke league. More singing and dancing, less accidental injuries (although, one never knows). During Alphabar Karaoke League's six week season, teams are judged both by how well they sing it and how well they bring it (points for theme-based costumes, audience interaction, etc.) You don't even need to get on the mic—"supporting actors" are welcome. Weekly themes at Ireland's 32 might include the '80s, '90s, One Hit Wonders and Disney.

Stepping into one of YamaSho's ten private lounges is like being transported to the Tokyo karaoke scene (with songs in both English and Japanese). The rooms have a Japanese feel, with low wooden tables and individual cushions on communal benches. The song machines are easy to operate, plus there's quick access to Japanese food and drink. YamaSho doubles as a restaurant downstairs, so pick up the phone by the door to your room to get an automatic connection to the staff for sake, sushi and more. Warning: No hard liquor here, in case you need that extra dose of liquid courage before stepping up.