As a session singer, Carmel recorded extensively at Abbey Road Studios and AIR Studios for films including The Avengers, Dr Strange, Jurassic World, The Nutcracker and the Four Realms, Kong: Skull Island, Star Wars: The Last Jedi as well as video games including World of Warcraft and So Let Us Melt.​

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Further engagements included for the London Bach Society, the London Handel Festival, A Bach Portrait, in the Deal Festival, under the direction of John Butt and in association with the Academy of Ancient Music, a masterclass of Schumann's Liederkreis at the Oxford Lieder Festival with Sarah Walker, Alexander's Feast for the Richmond Choral Society, Messiah with Dei Gratia Baroque, Haydn's Nelson Mass and Jenkin's An Armed Man with the West Sussex Philharmonic Choir and Orchestra, a recital of lieder at the Victoria and Albert Museum and Bach's Easter Oratorio with the Guildhall Consort under the direction of Eamonn Dougan and Pavlo Beznosiuk.

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Before moving to London Carmel was a regular guest of several Australian ensembles including The Song Company, Thoroughbass, Pastance, Cantillation, Collegium Musicum and Symphony Australis. An experienced chorister, Carmel sang in several choirs throughout her schooling before joining the Sydney Philharmonia Choir and later being accepted into their chamber choir. Since returning to Sydney, Carmel moved into electronic music as a music producer and DJ, whilst also maintaining a singinger career, performing with the Song Company, The House That Dan Built, The Choir of St James and St Andrew's Cathedral.