"Pony Girl" was written by Jeanine Tesori and Lisa Kron for Fun Home, but was cut during early workshops. The song, sung by Cerveris' character Bruce Bechdel, can be heard on the original Broadway cast recording.
Loose Cattle's country arrangement of "Pony Girl" is currently available on iTunes.
According to a release, "a very special limited edition heavyweight vinyl version, with original cover art by Alison Bechdel, on whom Fun Home is based, will be available by January, but may be preordered at Hill Country tonight."
The release party will also include performances by New Orleans Big Easy and Paul Sanchez.
For more information on Loose Cattle, click here.
