Conversation so far:
What was The Sweet's first album?
Funny How Sweet Co-Co Can Be is the Sweet's first album.
Did The Sweet's album Funny How Sweet Co-Co Can Be do well?
The Sweet's album Funny How Sweet Co-Co Can Be was not a serious contender on the charts.

Question: what was special about their first album?
Self-contained rewrite: What was special about The Sweet's first album