Bill Murray -- House of Bad Ass Cover Songs

There is, a house ... in Florida ... and when he's there, Bill Murray loves singing cover songs.

The comedy legend took to the stage Friday night in St. Augustine at the Murray Bros. Caddyshack Restaurant ... and performed a rousing set of songs -- including "Gloria" by Van Morrison and "House of the Rising Sun" by The Animals.

We're told Murray jammed out for around 45 minutes ... and in the video, the crowd was clearly stoked.