William Jack

William Jack redefines the cello possibilities, bringing the instrument into exciting new territories.

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William Jack is an Australian multi-style cellist and songwriter, based in London. He is best known for incorporating his jazz guitar background into an unconventional style of cello playing, with a passion for breaking boundaries between genres and cultures. His music transitions seamlessly from virtuosic folk & bluegrass compositions, to non-Western sound worlds.

Since his classical studies in Vienna, William has forged his own cello pathway, touring Europe, Australia and the UK extensively. He has recently performed his solo compositions from his album collection ‘This Old Cello Box’ live on BBC Radio 3 at the Edinburgh Fringe and was selected to perform as a ‘New Folk’ songwriter at the Kerrville Folk Festival in Texas. William received the best music award at the 2025 Adelaide Fringe. He has been fortunate to work with numerous world-renowned artists, both as a session musician and collaborator. William is passionate about redefining the cello possibilities, bringing the instrument into exciting new territories.

“A master of unconventional cello playing” – GLAM Adelaide

“Outstanding, a truly remarkable performance” – BBC Radio 3

“Specialist in all styles” – The Clothesline

“Cellopickin’ sensation” – DEBUT UK