Mark Ayres. Mark Ayres was >> in Musical Scales: An Era of Experimentation 
Barry Letts. Barry Letts was 82 in Musical Scales: An Era of Experimentation 
Timothy Combe. Timothy Combe was 71 in Musical Scales: An Era of Experimentation 
Michael E. Briant. Michael E. Briant was 65 in Musical Scales: An Era of Experimentation 
Malcolm Clarke. Malcolm Clarke would have been no older than 60 in Musical Scales: An Era of Experimentation as '(archive footage)'.
Christopher Barry. Christopher Barry was 82 in Musical Scales: An Era of Experimentation 
John Kelly. John Kelly was >> in Musical Scales: An Era of Experimentation as 'Producer, Director, Editor, Camera Operator'Dan Hall. Dan Hall was >> in Musical Scales: An Era of Experimentation as 'Executive Producer'Mark Ayres. Mark Ayres was >> in Musical Scales: An Era of Experimentation as 'Production Consultant'Steve Broster. Steve Broster was >> in Musical Scales: An Era of Experimentation as 'Camera Operator'Jonathan Wood. Jonathan Wood was >> in Musical Scales: An Era of Experimentation as 'Colorist'Derek Handley. Derek Handley was >> in Musical Scales: An Era of Experimentation as 'Researcher'Victoria Berry. Victoria Berry was >> in Musical Scales: An Era of Experimentation as 'Production Assistant'