I received a note from WS64 in Germany. He’s recorded an album of cover versions–14 songs–with the uBass as the bass and other instruments. You may know of his work from his YouTube channel and his “Don Williams” covers.
Here’s a taste of what he has to offer. If you like his stuff, maybe you can buy the album from him.
He notes that he’s using the uBass unplugged on all the songs it’s used on. Other instruments include ukulele, piano and a fretless bass for on track.