Tonight, hang with the opera crowd, check out an event in the East Bay, or drop by a first-rate bar for a second-rate schmoozefest with third-rate networking and fourth-rate entertainment. All in tonight's Valleywag Calendar.

  • SF Beta hosts its Holiday Bash at, where else, 111 Minna. The "highlight" of this networking event is a live performance by the Richter Scales, the San Francisco-based a capella band whose latest release "Here Comes Another Bubble" (embedded above) spread throughout the blogosphere as quickly as TB through a refugee camp. Should be a memorable event, if only for the amount of booze you'll have to consume to get through it. [Upcoming]
  • The San Francisco Opera's BRAVO! Opera Club, aimed at young professionals, hosts a cocktail hour at Palmetto on Union St. at 6 p.m.[Facebook]
  • The East Bay Interactive Group hosts its holiday party. In Pleasanton. Ugh. [EBIG]

(Since Richter Scales wasn't classy enough to include a photo credit in its video, I'd like to note that the photo of my boss was taken by Lane Hartwell.)

Got a to-do that's a must-do? Send it to calendar@valleywag.com. Check out more events on our Google Calendar:

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