Jonah O'Toole is an Irish composer who's music is characterized both strong melodic writing and the creation of memorable audio worlds. His music creates emotional connections, looking bridging the gap between the audience/player and the stories they are experiencing. He is most know for scoring the Irish language short film Cowboy go Deo (released 2026), which has been screened at the New Filmmakers New York and the Dublin International Film Festival, along with several nominations at the 17th Underground Film Cinema Awards.

Jonah has also had works performed by orchestras both in Ireland and abroad, and has recently participated in the 2026 Screen Music Program in Belluno, Italy, where he studying under composers such as Simon Franglen, Michael Abels, and Sean Callery.