First, NBC’s The Tonight Show juggled hosts. Next, it switched bandleaders.

Eric Deggans, TV/media critic of the St. Petersburg Times, joins us to look back at late-show music history -- and at Rickey Minor, the former American Idol bandleader tapped to replace longtime Tonight maestro Kevin Eubanks. Then, blogger and New York Observer contributor Christopher Rosen and Emily Rems of Bust magazine debate which outfit has the sharper musical (and comedic) chops: The Roots (Late Night With Jimmy Fallon) or Paul Shaffer & the CBS Orchestra (The Late Show With David Letterman).