Conversation so far:
What did George M. Cohan do in his early career?
George M. Cohan began writing original skits (over 150 of them) and songs for the family act in both vaudeville and minstrel shows while in his teens.
What were some of Cohan's skits?
George M. Cohan became a member of his parents’ act, reciting sentimental verse and performing a “buck and wing dance.” By age 11, he was writing comedy material
Who did George M. Cohan write for in his teens?
In his late teens, George M. Cohan wrote the songs and sketches that his family performed, and had the starring roles.

Question: What were some of his first songs?
Self-contained rewrite: What were some of George M. Cohan's first songs?