Conversation so far:
What was Paul Butterfield's Better Days about?
After the breakup of the Butterfield Blues Band, Butterfield formed his next band, Paul Butterfield's Better Days.
Who were the members of Paul Butterfield's Better Days?
Butterfield formed Paul Butterfield's Better Days with Chris Parker, Amos Garrett, Geoff Muldaur, Ronnie Barron and Billy Rich.
When did Paul Butterfield's solo career start?
As a solo act with backing musicians, Butterfield continued to tour and recorded Put It in Your Ear in 1976.
What kind of other musical setting Paul Butterfield was in after pursuing a solo career?
In 1975, he joined Muddy Waters to record Waters's last album for Chess Records, The Muddy Waters Woodstock Album.

Question: what kind of music was that?
Self-contained rewrite: What kind of music was The Muddy Waters Woodstock Album?