Over at the Zappateers site, two recordings of the rehearsing Zappa band, from 1981, are being seeded.
The first one is 40-minute plus and has the band practising Camarillo Brillo, Muffin Men, City Of Tiny Lites and Doreen.
The second one is includes Alien Orifice, Teenage Prostitute, Drowning Witch, Baltimore, Moggio, and more. And has some nice FZ Guitar Work Out as well.
Get them while they're hot...