Sounds like a fun, laid back afternoon/early evening. Not especially tight, but not too sloppy.

Prep School Hippie has a full-on mash-up with Not Fade Away that's pretty creative and a whole lot of fun. They come out of the jam into the "I can't wait til I'm 21 / to dip into my trust fund" refrain at 4:40. At 4:50, Mike and Trey (or Jeff) start teasing NFA, and then they sing the PSH refrain entirely to the melody and chords of NFA. Trey is cracking up all the while.

In Quinn, Mike forgets the lyrics of the third verse, prompting Trey to introduce him to the crowd; the music stops for a measure, then comes right back in. All in good cheer.