ruben and the jets
in 1973, frank zappa produced an album by ruben and the jets. he also played guitar on (at least) one track.
Patrick Neve (firstname.lastname@example.org)
He's not officially credited, but I'd bet my collection that it's FZ playing the solo on "This One's Dedicated To The One I Love."
Biffy the Elephant Shrew (email@example.com)
The wording of Tony Duran's credit implies that this is the only track TD does *not* play lead on, therefore...
Charles Ulrich (firstname.lastname@example.org)
Ruben Funkahuatl Guevara (email@example.com)