I didn't have this on my Bingo Card. Dave talks to the Professor of Rock, of Youtube fame.
Nothing crazy important here, just a fun, casual discussion about Rock and Motown and popular music, generally.
I think this is mainly a test of Youtube's collaboration feature where two people can do a show and the show will be added to both of their feeds.
To learn more about the Bob Dylan performance they mention, see this.
Meanwhile I'm SURE I have a post about the Future Islands performance but can't find it. The performance is here.