He has collaborated with John McLaughlin, Ustad Sultan Khan, Fazal Qureshi, Bill Laswell, Shawn Lane, Jens Johansson, Anders Johansson, Ginger Baker, Michael Shrieve, V. Selvaganesh, Jeff Sipe, Mattias IA Eklundh, Public Image Ltd, and Buckethead.

[1] He played the Montreux Jazz festival in Switzerland in 1981 and met Michael Brecker, who introduced him to John McLaughlin, Billy Cobham and other fusion stars.

[3] In 1986 and 1987 he toured with a project featuring Ginger Baker on drums and Bernie Worrell on keyboards, which appears on Hellborg's 1988 album Bass.

[5] In 1988 Hellborg moved to New York and started his own band which first included keyboardist Aydin Esen and drummer Kenwood Dennard,[6] and later the Johansson Brothers, Jens on keyboards and Anders on drums.

The first record was Abstract Logic with Ginger Baker's son Kofi on drums; this was followed by Michael Shrieve's Two Doors.

), in 1979, releasing his first solo bass record, The Bassic Thing – an early showcase of his pioneering chordal, and for the time very advanced, slapping approaches.

With the move to the US, a new entity was formed, called Bardo Music, that took over the responsibilities of Hellborg's output, now counting around 40 releases.