David Letterman is entering his final month as host of The Late Show before handing the keys over to Stephen Colbert and he has scheduled a number of major musical guests. The most exciting of those is a rare performance by Tom Waits. It’s unclear what Waits will be performing, his last album was 2011’s Bad As Me and he doesn’t have any new music announced. Stay tuned later this month to see.

Below watch Waits’ 2012 appearance on Letterman and revisit our Essential Guide on him.