Speaking of gay history in S.F., let's take a little Sylvester break this afternoon. Sylvester's 1978 disco classic "Mighty Real" remains an anthem of the era, and of the gay disco scene back in the days of the Trocadero Transfer. (Amusingly, you can read Michael Musto's account of interviewing Sylvester back in the day, which turned out to be kind of a bore.)