Conversation so far:
Why did Bert Williams start a solo career?
George Walker, the businessman and public spokesman for the duo for 16 years, was in ill health and died. Bart Williams needed to reestablish himself as a solo act.
Did George Walker, Bert Williams' professional partner, die?
George Walker had syphilis and suffered a stroke onstage in January 1909. He and Bert Williams never performed in public again, and Walker died less than two years later.
How did George Walker's death affect Bert Williams?
George Walker had been the businessman and public spokesman for the duo. His absence left Bert Williams professionally adrift.
What did Bert Williams do after George Walker's death?
After 16 years as half of a duo, Bert Williams needed to reestablish himself as a solo act. He returned to Hammerstein's Victoria Theater and the high-class vaudeville circuit.

Question: Did he sing there?
Self-contained rewrite: Did Bert Williams sing at the Hammerstein's Victoria Theater?