String trios (Violin, viola, double bass)

Albums

1. Kontrabass = Double bass : greatest works. — [Germany] : Edel Classics, [2009]	2. Raritäten für Kontrabass / Rossini, M. Haydn, Couperin, Vanhal. — Germany : Ars Vivendi, p1990.	3. String quartet no. 1 ; Quintet for piano and strings ; Trio for violin, viola and double bass / Frank Proto. — Cincinnati, Ohio : Red Mark Records, p1996.	4. The sound of the bass / Frank Proto. — Cincinnati, Ohio : [Liben Music, 1974?]
5. The sound of the bass. Vol. one / Frank Proto. — Cincinnati, Ohio : QCA Redmark, p1978.	6. Trios. — Evanston, Ill. : Musical Arts Society, p1995.