Conversation so far:
When was the Phonograph first introduced in the United States?
Thomas Edison announced his invention of the first phonograph, a device for recording and replaying sound, on November 21, 1877, and he demonstrated the device on November 29.

Question: What were the first uses for the Phonograph in the United States?
Self-contained rewrite: What were the first uses for the Phonograph in the United States?