After much searching, I finnaly gave up and emailed Coors. This was their responce--->
'We're happy to hear that the 'Love Songs' commercial caught your eye! We're excited about the new ad campaigns for all of our products.
The lyrics for 'Love Songs' were written by our ad agency, Foote Cone & Belding, based on a parody of a song written by Tom T. Hall. A studio band performed the song.
We have other great news! The studio musicians who performed for the commercial have formed a group called Sub 16. Sub 16 will be releasing a CD sometime in the fall through Helium Records. Watch for it! We hope this information was helpful.'