HK Ní Shioradáin has a broad musical background in jazz, film music, traditional Irish, folk, musical theatre, rock and pop. They have composed for film, theatre, musical theatre, bands, and radio. They have a degree in Music Composition for Games from Griffith College Dublin. They have a BA in English Literature and Film Studies from Trinity College Dublin which is crucial to their film scoring and lyric writing.
The Faggot Manifesto is a musical with collaboration with writer Ultan Pringle. It began as a workshop in Players Theatre in 2020 to explore assimilation vs radicalization in the queer community in Ireland. Subsequent support and funding was received from Backstage Theatre Longford where HK and Ultan spent time developing and then workshopping the piece with two actors. HK was awarded an Arts Council Agility Award 2021 to continue development on this musical. In July 2022, they did a workshop of the project with 7 actors in the New Theatre with funding and support from Lemon Soap Productions.