[1] Since that time he has worked as a freelance composer, operatic and recital singer and lecturer in voice, based primarily in Auckland.
The "Te Deum Laudamus" was commissioned by award winning, Seattle based vocal ensemble,[9] Opus 7 for their 10th anniversary celebrations in 2002.
[10] Other notable works include, "The Servant", for choir, soloist and two string quartets and operas, "The Woman from Moab", based on the biblical book of Ruth and "The White Lady".
[12] This work, originally commissioned by John Rimmer, consists of six art songs with poetry inspired by the paintings of Doris Lusk.
He performs an extensive baritone repertoire of opera and oratorio and recital tours have taken him to the United Kingdom, Europe the US and Taiwan.
[14] His operatic repertoire has included La Traviata, Madama Butterfly, The Magic Flute, Tosca, Gianni Schicchi, Salome, Der Rosenkavalier, Don Pasquale, The Pearl Fishers, Macbeth, Cenerentola, Die Fledermaus, Julius Caesar, Così fan tutte, Zaida and Galileo.
As a concert soloist, Griffiths has performed all the major works of J S Bach, the War Requiem by Benjamin Britten, Elgar's The Dream of Gerontius, Elijah by Felix Mendelssohn, The Light in the Wilderness by Dave Brubeck, Monteverdi's Solemn Vespers, Vaughan Williams' Five Mystical Songs, The Messiah by Handel and Carmina Burana by Carl Orff.
[17] Griffiths has recorded much of the English, German and French Art Song repertoire for Concert FM as well as a significant body of New Zealand music.