Well we know Frank Zappa was no stranger to fretless guitar and the good news is his son, Dweezil Zappa, acquired a specially made Fretless Gibson SG fitted with a Sustainiac and Antares Auto Tune in January 2015. Dweezil is fired up by the guitar and it features on two tracks (Hummin’ & Truth) on his forthcoming album “Via Zammata” released 15th Nov 2015. Dweezil also plays Glissentar on “Billionaires Son” and Oud on “Dragon Master”.
There is a video preview of the album “Via Zammata” at http://www.pledgemusic.com/projects/dweezilzappa
Dweezil previously used a custom made Moser fretless guitar with a Les Paul junior body and a Fender strat style fretless neck.
The full article, with pictures, can be found here:More Dweezil