Molly Mason is an American musician and composer.\r \r Mason grew up in Washington state. She plays traditional American fiddle and acoustic bass guitar. Jay Ungar, whom she had first met during the 1970s, and they continue to perform together, with their band, Swingology, and occasionally Jay's daughter Ruth Ungar (her mother is Lyn Hardy) and her band The Mammals. Jay Ungar, Molly Mason, Ruth Ungar and Michael Merenda also perform together as the Jay Ungar and Molly Mason Family Band.\r