As yellow lights scatter patterns of squares all across the 7,700-square-foot venue, onstage, a band is running through their setlist and tuning instruments. At Mezzanine, soundcheck for Ginger Root is...

  By Babak Haghighi Photos by Andy Sweet Bootie is the best dance party in San Francisco. That’s a fact. The weekly mashup party is held every Saturday at DNA Lounge in SoMa. But...