There is a clip from the film on YouTube at the moment, though a comment ~Dec2016 says they think the music played is different from what they heard previously.
https://youtu.be/bIvkbufV2L0 (ros27g)

What I hear on the clip above is
Joe Hickerson, Lynn Hickerson, Ginny Dildine, Ed Trickett, New Golden Ring
http://open.spotify.com/track/1fsm7mLzftqsAEXbmei4FB