Brennan has recorded dozens charitable singles and on many more albums with various artists, including "Raphael's Journey" by Joanne Hogg in 2008, "Songs for Luca" and "Songs for Luca 2" by Iona, and the official song for Ireland's 2008 Olympic Team, "Green to Gold". Moya also donated her b-side "Ceolfaidh Mé" to the "Field of Hope" album, which also features Bono and The Corrs. In October 2008, Brennan was appointed director for Ireland's first Christian satellite radio station, UCB Ireland, which operates from Dublin. Moya also recorded a song under her birth name "Máire Ní Bhraonáin" on the 2009 "Ceol Cheann Dubhrann" album with Manus Lunny to raise funds for Áislann Rann na Feirste and Scoil Náisiúnta Rann na Feirste.