Joint Operations Centre

John O'Callaghan (born 1981) is an Irish musician and DJ, who mainly produces trance music. He also produces music under the aliases of Joint Operations Centre, Mannix, Henrik Zuberstein, and Stenna. He has collaborated with fellow Discover 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, and "Find Yourself" (feat. Sarah Howells). Callaghan 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.

Timelapse - 2024-04-12T00:00:00.000000Z

Darkstate (A Dreamstate Anthem) - 2022-11-18T00:00:00.000000Z

A New Dawn (Joint Operations Centre Remix) - 2022-07-22T00:00:00.000000Z

Gizmo - 2021-06-25T00:00:00.000000Z

Behind the Silence (John O’Callaghan Remix) - 2021-02-26T00:00:00.000000Z

Meraxes / Mom I Don’t Feel Well / Moonlight - 2020-06-05T00:00:00.000000Z

Fugitive - 2019-12-06T00:00:00.000000Z

Behind the Silence (Cold Blue Remix) - 2018-08-24T00:00:00.000000Z

Behind the Silence - 2018-08-03T00:00:00.000000Z

Pathological Effect - 2017-09-04T00:00:00.000000Z

Goodnight Irene (Shugz Remix) - 2016-11-04T00:00:00.000000Z

Dexathol + Plexatron - 2016-08-26T00:00:00.000000Z

Goodnight Irene - 2016-05-02T00:00:00.000000Z

Castlevania - 2014-07-16T00:00:00.000000Z

Under a Sea of Birds - 2013-08-26T00:00:00.000000Z

Heavy Gear - 2012-04-10T00:00:00.000000Z

Glyph / Ipso Facto - 2012-04-02T00:00:00.000000Z

Backup / Cramped - 2009-11-30T00:00:00.000000Z

New Jersey / Jetlag Dancer / Puzzle - 2008-09-29T00:00:00.000000Z

Shortwave / Bass Thing - 2008-01-07T00:00:00.000000Z