Opho was a collaborative project whose sources were provided by artists from around the globe. A total of 159 samples were submitted; after applying permutational and division parameters, 319 samples resulted. Although the project was coordinated, compiled, edited and sequenced by Brian Comerford (aka E23), this project would not have been possible without the generous collaborative spirit and audio contributions of the following artists:

Dave Alex (Larkspur, CO, USA)
Mike Brown (Denver, CO, USA)
Ronnie Cramer (Denver, CO, USA)
Deckmantel (Hannover, Germany, EU)
devslashnull (Lafayette, CO, USA)
Michael A. Doherty (Denver, CO, USA)
Elodie Durand (Cergy, France, EU)
Eric Gangloff (Denver, CO, USA)
GrandpaMojo aka Chris B. Hansen (Denver, CO, USA)
August Highland (San Diego, CA, USA)
George Millward (Sheffield, England, UK)
Maryse Morel (Seattle, WA, USA)
Chris Mosdell (Tokyo, Japan)
Socks’n’Sandals (Brooklyn, NY, USA)
Judianne Triglia (Denver, CO, USA)