Turns out all it takes is a 7,466-pipe Aeolian-Skinner organ and a stained glass backdrop to lend classic carols new life. Listen to holiday songs played by Grace Cathedral’s 1934 organ accompanied by the Bay Brass, a cooperative of musicians hailing from the San Francisco Symphony, the San Francisco Ballet Orchestra and the San Francisco Opera Orchestra. Grace Cathedral, 1100 California St between Taylor and Jones Sts (415-749-6300, gracecathedral.org/christmas). Dec 19 7:30pm. $15–$60.