Conversation so far:
What did John Lee Hooker do later in his career?
John Lee Hooker appeared in the 1980 film The Blues Brothers. He performed Boom Boom in the role of a street musician.
How did John Lee Hooker die?
John Lee Hooker died in his sleep on June 21, 2001, in Los Altos, California in his home.
What was John Lee Hooker's first career?
John Lee Hooker was working as janitor in a Detroit steel mill when his recording career began in 1948.

Question: What was his first album?
Self-contained rewrite: What was John Lee Hooker's first album?