Conversation so far:
When did their first album debut?
The album debuted on Billboard charts on 9/2/67.
What was the album called?
They recorded four of the songs for the album Big Brother & the Holding Company.
What was one of the songs?
The first single released was "Blind Man.

Question: Were these four songs successful?
Self-contained rewrite: Were the four songs  that Mainstream Records recorded for the album Big Brother & the Holding Company successful?