Conversation so far:
How were Drake's early mix tapes distributed?
Drake self-released his debut mixtape
How many copies of Drake self-released his debut mixtape sold?
Drake's mixtape was released for sale only, and confirmed to have sold over 6,000 copies
When did Drake create his next mix tape after his self-released debut mixtape?
In 2007, Drake released his second mixtape, Comeback Season.

Question: Did it sell better than his first tape?
Self-contained rewrite: Did Drake's second mixtape, Comeback Season sell better than his first tape?