Jackman's earliest known musical activity was as a member of Cornelius Cardew's Scratch Orchestra between 1969 and 1972.
Preach The Word: Essays on Expository Preaching In Honor of R. Kent Hughes (ISBN 1-58134-926-2) included contributions by David Jackman, D. A. Carson, Wayne Grudem, John F. MacArthur, Bruce Winter, J. I. Packer, Phillip Jensen, Philip Graham Ryken, and Peter Jensen.
Snatch Tapes was part of the then burgeoning cassette culture scene and also released tapes by David Jackman (later of Organum), and Claire Thomas & Susan Vezey as well as tracks by the Lemon Kittens, Alien Brains, Cultural Amnesia and the Beach Surgeons (led by a young Graham Massey, later of 808 State).
David Bowie | David Lynch | David | Late Show with David Letterman | David Cameron | David Beckham | David Lloyd George | David Hume | David Hockney | David Letterman | David Byrne | David J. Eicher | David Mamet | David Foster | Late Night with David Letterman | David Ben-Gurion | Jacques-Louis David | David Guetta | David Carradine | Henry David Thoreau | Hugh Jackman | David Tennant | David Niven | David Essex | David A. Stewart | David Sanborn | David Livingstone | David Garrick | David Crosby | David Attenborough |
Steven Stapleton of Nurse with Wound also did the artwork for the album, and was sufficiently impressed by David Jackman's track that he invited him to collaborate on a series of music projects.