What key details about john shannon -lrb- musician -rrb- can be extracted from the following bio? Bio: john shannon is an american folk and jazz guitarist and composer .
- years active is 2000 -- present- past members is dan brantigan garth stevenson ziv ravitz caroline mcmahon- origin is pittsburgh- label is obliqsound / creek valley- genre is songwriter- name is john shannon -lrb- musician -rrb-- background is group_or_band- image is thumb- current members is john shannon evan pazner caroline mcmahon tony grey