Conversation so far:
When was the pinnacle of Willies career?
Dixon signed with Chess Records as a recording artist, but he began performing less, being more involved with administrative tasks for the label.
By 1951, he was.
What happened in 1951?
By 1951, he was a full-time employee at Chess, where he acted as producer, talent scout, session musician and staff songwriter.
Was he successful in his new positions?
From late 1956 to early 1959, he worked in a similar capacity for Cobra Records, for which he produced early singles for Otis Rush, Magic Sam.
Did he win any awards for his work?
Dixon ran his own record label, Yambo Records, and two subsidiary labels, Supreme and Spoonful.
He released his 1971 album, Peace?.
Was his album a success?
Dixon is considered one of the key figures in the creation of Chicago blues.
What types of music did he perform?
He worked with Chuck Berry, Muddy Waters, Howlin' Wolf, Otis Rush, Bo Diddley, Joe Louis Walker, Little Walter, Sonny Boy Williamson, Koko Taylor.

Question: Did he sing or play an instrument?
Self-contained rewrite: Did Willie Dixon sing or play an instrument?