Fortunare Nos was composed in 1986 for the wedding of one of Tranchell's students. It incorporates the hymn tune Wish Road originally written for Eastbourne College in 1950. The words are from a hymn by Henry J. Buckoll (1803-71) in Psalms and Hymns for Rugby School Chapel, 1850, and the Latin verse is a translation, presumably by Tranchell, of Verse 1.

The anthem Cantantibus Organis for St Cecilia’s Day was written by Peter Tranchell in 1987 for use by the choir of Gonville and Caius College, Cambridge, where he was Precentor (Director of Music), and it was sung at Evensong (presumably on St Cecilia’s Day, 22 November) that year. It was written for S.A.T.T.B. and Organ, with Soprano, Tenor and Bass solos.

Peter Tranchell set this famous text (from Edward Fitzgerald’s version of Rubáiyát of Omar Khayyám of Naishápúr) to music in May 1978, shortly before the death of Geoffrey Thornton, the Caius Chapel organ scholar who succumbed to melanoma. Peter knew it was inevitable and although there's nothing on the score it was conceived very much as an In Memoriam.