Conversation so far:
What was Tom Lehrer's style?
Tom Lehrer's style consists of parodying various forms of popular song.
What controversial subjects did Tom Lehrer create songs about?
Tom Lehrer produced a number of songs that dealt with social and political issues of the day.
What genre of music did Tom Lehrer make?
Tom Lehrer is best known for pithy and humorous songs.

Question: Who were his influences?
Self-contained rewrite: Who were Tom Lehrer's influences?