Bay seniors who worship at the shrine of John Contrane may not realize that there is an actual Saint John Coltrane African Orthodox Church here. Seriously. On Sunday December 8 they are celebrating the 50th anniversary of the world’s greatest jazz saxophone player’s recording of the epic “A Love Supreme”. It happens in, of all places, Grace Cathedral at the 8 pm Vesper Service. Free. Down the hill at the SF Jazz Center there will be a symposium on this landmark recording on Dec. 11. On Dec, 12 a Coltrane tribute band led by Ravi Coltrane and Joe Lovano will perform there. If you are into electrifying jazz drumming, the Geezer recommends the new film, ”Whiplash”.