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Geoffrey’s credits as Musical Director/Conductor include the Australian premiere of The Bridges of Madison County (Neil Gooding Productions/Matthew Management/Hayes Theatre), Aspects Of Love (Hayes Theatre/Walk This Way Productions), On The Town (VCA), Aladdin (Disney Theatrical Australia), the 25th Anniversary production of Les Misérables (Cameron Mackintosh/Michael Cassel), the Auckland season of Mary Poppins (Disney/Cameron Mackintosh), Songs For A New World (Blue Saint Productions/Chapel Off Chapel), December Songs (Chapel Off Chapel) Songs From An Unmade Bed (Chapel Off Chapel), Diamonds Are For Trevor (Trevor Ashley/Arts Centre Melbourne/MidSumma), Guilty Pleasures (Joshua Robson Productions/Chapel Off Chapel), What A Shock ‘N’ Shame (New Theatre) and Hello Again (Gaiety/Darlinghurst Theatre). As Associate/Assistant Musical Director for Sweeney Todd (Life Like Co.), Wicked (GFO/Universal), Dirty Rotten Scoundrels (James Anthony Productions), Mary Poppins (Disney/Cameron Mackintosh), Disney’s High School Musical (Jacobsen/Really Useful) and Guys And Dolls (Donmar Warehouse/Ambassador). As a pianist he has played on productions including Ragtime (The Production Company), Charlie And The Chocolate Factory (GFO), Muriel’s Wedding (Sydney Theatre Company/Global Creatures), A Chorus Line (TML Enterprises), Into The Woods (ANZ/Rob Guest Endowment), Mamma Mia (Louise Withers), Pippin (Kookaburra), Spring Awakening (Sydney Theatre Company), Priscilla Queen Of The Desert – The Musical (GFO/Back Row Productions) and Altar Boyz (Ovations Live).


Geoffrey has been invited as guest conductor for the Canberra Symphony Orchestra and Darwin Symphony Orchestra and has collaborated with artists including Simon Gleeson, Andréa Burns, Joshua Henry, Marika Aubrey, Toni Lamond, Hayden Tee, Avigail Herman, Rob Mills, Margi De Ferranti, Wayne Scott Kermond, Katrina Retallick, Trevor Ashley, Lucy Durack, Virginia Gay, David Campbell, Annie Aitken, Lea Salonga and Hans Zimmer. He has musically directed and arranged for numerous corporate events and concerts and given his time to charity events including Light The NightTwisted BroadwayHats Off, World AIDS Day and The Rob Guest Endowment. Geoffrey has also written arrangements for events including Carols By Candlelight and The Helpmann Awards. Geoffrey was the Musical Director for The Annual Sydney Cabaret Showcase in 2005, 2007 and 2009.


Geoffrey held the position of Assistant Conductor with the Sydney Conservatorium Choir for their concerts of Orff’s Carmina Burana and Haydn’s The Creation. Geoffrey is passionate about education and has facilitated numerous masterclasses and panels. He has been employed by VCA, NIDA and the NSW Department of Education (The Arts Unit) and is in demand as a vocal coach. Geoffrey’s television and radio work includes recordings for ABC National Radio, appearances on Mornings with Kerri-Anne, Sunrise and The Morning Show, and a member of the Australian Idol choir for two Grand Finals. He can also be found on iTunes.


Geoffrey holds a Bachelor of Music (Performance/Music Education) from the Sydney Conservatorium of Music, an AMusA in piano from the AMEB and was awarded the 2002 Young Citizen of the Year for Willoughby City Council.

"The orchestra is outstanding under conductor, Geoffrey Castles."

- Kate Herbert, Herald Sun Les Misérables review 2014 

"Musical director Geoffrey Castles gives the score plenty of fire."

- Ben Neutze, Daily Review Aladddin review 2016 

Geoffrey Castles AMusA, BMus

Image by Kurt Sneddon, 2012

Image by Disney Australia, 2017

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