The current organ at St. Thomas’s is a Guilbaud-Thérien Inc. rebuild of the Church’s 1911/1955 3-manual, 45-stop Casavant (Opus 459) and the church’s original 1891 S.R. Warren 2-manual, 23 stop organ. Guilbaut-Thérien, Inc., Opus 37, 1991 has an electrified console and rebuilt organ with 60% new pipes (61 in all), and new windchests and casework …
It is one thing to convince a congregation that they should buy a new organ, and sometimes a more difficult thing to obtain approval for the removal of a carpet. St. Thomas’s … made a great advance in 1991, both musically and acoustically. The organ is a large eclectic instrument with attractive casework employing polished tin speaking principal pipes … The great organ speaks into the south transept, the Choir into the choir area, and the Swell is double decked in the north east corner of the Organ surrounded by Pedal pipes.
—Excerpted from Organs of Toronto, Alan Jackson & James Bailey, Royal Canadian College of Organists, Toronto Centre, 2002