Conversation so far:
What kind of songs were on the album Rubber Soul by The Beatles?
Author Andrew Grant Jackson describes the album Rubber Soul by The Beatles as a synthesis of folk, rock, soul, baroque, proto-psychedelia, and the sitar.
Was the album Rubber Soul by The Beatles considered a hit?
The album Rubber Soul by The Beatles met with a highly favourable critical response and topped sales charts in Britain and the United States for several weeks.

Question: How many copies were sold?
Self-contained rewrite: How many copies of the album Rubber Soul by The Beatles were sold?