Conversation so far:
Where were The Clark Sisters born?
The Clark Sisters were born and raised in Detroit, Michigan.
Were any of The Clark Sisters twins?
he Clark Sisters are an American gospel vocal group consisting of five sisters.
Are there any other interesting aspects about The Clark Sisters?
They are credited for helping to bring gospel music to the mainstream and are considered as pioneers of contemporary gospel.

Question: What album did they produce?
Self-contained rewrite: What album did The Clark Sisters produce?