Conversation so far:
When was Hound Dog released?
February 1953
How was Hound Dog recieved?
Don Robey estimated that Thornton's version of Hound Dog sold between 500,000 and 750,000 copies, and would have sold more without an abundance of cover versions and answer songs.

Question: what else is interesting about this passage?
Self-contained rewrite: What else is interesting about this passage about Hound Dog?