Conversation so far:
Where are The Foundations from?
CANNOTANSWER.
Who were the original members?
The oldest member of the group was Mike Elliott, who was 38 years old.
The youngest was Tim Harris.
Were there any other members?
Eric Allandale on trombone.

Question: What other people were in the band?
Self-contained rewrite: Other than the acknowledged members what other people were in The Foundations?