He is the co-founder of the Irish folk duo Tír na nÓg.

After the band decided to split in 1974, he produced albums on Polydor and EMI labels for other Irish artists including Loudest Whisper, Ray Dolan or Gemma Hasson.

[3] His third album, Will, was released in February 2011 and features poems of Liverpool writer John McKenna set to music.

[4] From 2020, O'Kelly started playing a live-streamed series of gigs.

[1] Solo With Tír na nÓg With Carrier Frequency As producer