Jack Cullen is a Dublin born tuba player currently based in Glasgow. He studied his undergraduate degree at TUDublin Conservatoire under the tuition of Conor O'Riordan, for which he received a first class honours in performance. He is currently completing his postgraduate degree at the Royal Conservatoire of Scotland, having received the prestigious George Moore Scholarship to fund this endeavor.

With the aim of being an orchestral tuba player, Jack plays regularly with various orchestras around Ireland and the UK, including the brass ensemble of the RTÉ Concert Orchestra and the Scottish Chamber Orchestra. Jack is an avid chamber musician, playing with many ensembles between Ireland and Scotland such a brass quintets and dectets. He joined Vox Amicum in 2021 having recorded with them several times previously.