He later studied the harpsichord privately under Wanda Landowska.
Gilbert made his first recordings with the Canadian label Baroque Records Co.
of Canada Ltd.
in 1962 - an all J.S.
Bach program, followed by several more solo harpsichord recordings of music by Bach, another of Rameau, and several chamber music albums with other Canadian artists: Mario Duschenes (flute & recorder), Steven Staryk (violin), Jacques Simard (oboe), as well as French flautist Jean-Pierre Rampal.
As organist, he recorded an album of works by Boehm, Buxtehude and Walther on two Casavant-built instruments in Quebec.
(All of these recordings were subsequently reissued on Orion Master Recordings in the U.S.A.) In 1983 he recorded a two-CD selection from the Montreal Organ Book on the Hellmuth Wolff organ at McGill University for the Canadian label Analekta.
Gilbert performed for the Peabody Mason concert series in 1974.