Musical Scales: An Era of Experimentation (documentary)

 was a DVD documentary that was released on 14 January 2008.

Booklet synopsis
A look at an extraordinary era of musical experimentation within Doctor Who, with special emphasis on the musical scores for Doctor Who and the Silurians and The Sea Devils. Featuring producer Barry Letts, composer Mark Ayres and directors Timothy Combe, Christopher Barry and Michael Briant, with an archive appearance from Radiophonic composer Malcolm Clarke.

People interviewed

 * Mark Ayres, Composer
 * Barry Letts, Producer
 * Timothy Combe, Director
 * Michael Briant, Director
 * Malcolm Clarke, Composer
 * Christopher Barry, Director

Crew

 * Interviewers - Andrew Beech, George Williams
 * PanoptiCon panel courtesy of Dominitemporal Services Ltd
 * Production Assistant - Victoria Berry
 * Production Consultant - Mark Ayres
 * Photographic Research - Derek Handley
 * Camera - John Kelly, Steve Broster
 * Colourist - Jonathan Wood
 * Executive Producer - Dan Hall
 * Produced and Edited by - John Kelly
 * © 2008 2|entertain