John O’Callaghan, Irish musician and disc jockey who mainly produces trance music, is born in Navan, County Meath, on September 24, 1981. He also produces music under the aliases of Joint Operations Centre, Mannix, Henrik Zuberstein, and Stenna.

O’Callaghan has collaborated with fellow Discover Recordings artists such as Bryan Kearney, Neal Scarborough (as Inertia), Thomas Bronzwaer (as Lost World), and Greg Downey as well as, more recently, trance hero Leon Bolier. His best-known tracks are “Exactly” with Bryan Kearney, “Big Sky”, in collaboration with vocalist Audrey Gallagher of the alternative metal band Scheer, and “Find Yourself” (featuring Sarah Howells). He has received remixes by trance artists such as The Thrillseekers, Sean Tyas, Gareth Emery, Cosmic Gate, Markus Schulz and Indecent Noise. He has also worked with Heatbeat and Aly & Fila.

O’Callaghan formerly has the majority of his work released on Discover Recordings, the British record label set up by John Askew. Later, his work is released by Armada Music and its sublabels — primarily on Armind and Soundpiercing. The remix of his vocal trance production “Big Sky” by Agnelli & Nelson is voted “Tune of The Year” by listeners of Armin van Buuren‘s A State of Trance radio show in 2007.

In 2008, O’Callaghan enters the DJ Magazine 100 at number 60 and picks up two awards at the Irish Dance Music Awards, winning Best Producer and Best DJ. He also becomes the first Irishman to play Trance Energy. In 2009, he rises 36 places to 24th in the DJ Magazine 100.

In addition to numerous single releases, O’Callaghan has released a live album (Discover “Live As” Volume 2) and two artist albums, Something To Live For and Never Fade Away.

Never Fade Away is released in 2009 on the Armada Music label shortly following the single release of “Find Yourself.” “Find Yourself” is tipped a future favorite on A State of Trance. The track receives recognition from many DJs, including Armin van Buuren, Tiësto, Judge Jules, Matt Hardwick and Gareth Emery. The track also receives a remix from Cosmic Gate, which makes a lot of headway in many DJs’ set lists following its release. He also releases another single from the album, “Surreal,” which includes vocals from an artist known as Jaren. In 2010, O’Callaghan starts his very own sublabel on Black Hole Recordings called Subculture.