Here's Rodney Shifflet's "Under The Covers" album.
Straight from Bandcamp and available as a free download.
It opens with 'Anything', the Ray Collins composition that was recorded by The Mothers Of Invention.
Performed as a fine guitar instrumental.
And there's more.
Track 3 is King Crimson's 'Red', and track 5 is Zappa's 'Let's Move To Cleveland / Filthy Habits'.