He sang the role of Jake in the both the stage version and the recording of the Glyndebourne production of Gershwin's "Porgy and Bess". His voice was used on the soundtrack to the 1993 television production of "Porgy and Bess", in which Gordon Hawkins
, as Jake, lip-synched to Hubbard's singing voice.
Did You Know?
His voice can be heard singing the first two lines of the opening verse to "Ol' Man River", during the introduction to the NPR show "A Night on the Town".