Albums

• A Heavy Nite With... (October 2003)

Singles

• The Heavy (November 2002)
• Billy Jack / Sexualized (July 2003)

Compilations featuring Relaxed Muscle tracks

• Une Rentrée 2003, Vol 1 (September 2003) featuring Beastmaster
  • Came with Les Inrockuptibles magazine (France)

• Rolling Stone: New Noises, Volume 62 (2003) featuring Billy Jack
  • Rolling Stone magazine sampler (Germany)

• A Brilliantine Mortality (Februay 2004) featuring Billy Jack
  • Released by Rough Trade (Germany)

• TDK Cross Central Vol. 1 (2004) featuring Sexualized
  • Free promotional CD given away to promote the first TDK Cross Central festival in London

• #04 DJ Amable (disc 2) (2004) featuring Rod of Iron
  • Spanish compilation

• The Electronic Bible, Chapter 1 (January 2005) featuring This Is as Good as It Gets
  • The featured track is not available anywhere else.

Promos

• The Heavy EP (Early 2003, CD EP)
  • Catalogue number: RTRADEPR073
  • Tracklisting: Same as the regular EP

• Billy Jack / Sexualized (June 2003, CD single)
  • Catalogue number: RTRADEPR106
  • Tracklisting: Same as the regular single

• Billy Jack / Sexualized (June 2003, 12" single)
  • Catalogue number: MUSCLE 001
  • Tracklisting: Billy Jack / Sexualized
  • Notes: Came in a plain black sleeve

• A Heavy Night with... (circa October 2003, CD album)
  • Catalogue number: RTRADEPR131
  • Tracklisting: Same as the regular album
  • Notes: The title is slightly different: on the final release 'Night' was spelt 'Nite'.