Evans was born in Pontypridd and studied voice in Cardiff. In the years immediately following World War II, he worked for the British Forces Radio Network in Hamburg.
Evans also appeared in the premieres of many modern English operas, including Vaughan Williams's Pilgrim’s Progress (1951); Britten's Billy Budd (1951) and Gloriana (1953), Walton's Troilus and Cressida (1954), Hoddinott's The Beach of Falesá (1974) and Murder the Magician (1976).
After his retirement from the operatic stage in 1983, Evans worked as a operatic stage director.
Evans died in Aberystwyth in 1992 at the age of 70.
A welshman bass-baritone, GeraintEvans, was born in a small mining town called Cilfynydd, which in English is translated to mean "the edge of the mountain." Resonant voices are not rare among Welshmen.
GeraintEvans' studies, however, were interrupted by the outbreak of World War II, during which he served in the Royal Air Force.
GeraintEvans first became identified with the role of Sir John Falstaff at the 1950 Glyndebourne Festival, and he was subsequently selected to sing the Verdi role in a phenomenally successful Covent Garden production in 1961, staged and designed by the mercurial Franco Zeffirelli.