Albums + EPs

• Danses symphoniques / Rhapsodie sur un thème de Paganini / Concerto pour piano n° 4 2023-10-26
• Broadcast and Concert Performances, 1944-1952 2016
• Complete Recordings 1944–1953 2014-03-25
• reDiscovered 2008-05-06
• Piano Concerto no. 2 / Rhapsody on a Theme of Paganini 2002-03
• Great Pianists of the 20th Century, Volume 52: William Kapell 1999
• William Kapell Edition 1998-09-29
• William Kapell Edition, Vol. 4: Khachaturian: Concerto / Prokofiev: Concerto no. 3 / Shostakovich: 3 Preludes 1998
• William Kapell Edition, Volume 1: Mazurkas 1998
• William Kapell Edition, Volume 8: Frick Collection Recital: Copland, Chopin, Mussorgsky 1998
• William Kapell in Performance 1997
• William Kapell, Vol. 1: Rachmaninoff: Piano Concerto no. 3 / Khachaturian: Piano Concerto 1993

Singles

• Rhapsody on a Theme of Paganini 1946-03
• Rhapsody on a Theme of Paganini 1946-03