Kelly is a current member of the Irish band Celtic Thunder, but he maintains his early musical background as a solo singer. His first solo album, released in 2010 is called "In Time"; his second, "Life", was released in 2013. With fellow Celtic Thunder singer and band member Neil Byrne, the duo have released three albums - "Acoustically Irish", in 2013, and 'Byrne and Kelly: Live in Australia', in 2014; and "Echoes" in 2016.