Yo-Yo Ma: Bach, Big Bird and me

He has played for eight presidents and jammed on Sesame Street. But Yo-Yo Ma is now facing his biggest challenge yet – a Bach marathon at the PromsSomething weird happens in Bach’s fifth suite for unaccompanied cello. The soloist, who has been bowing away for the past hour and 25 minutes on the previous four suites, tackling some of the most soulful and demanding music in the western classical canon, is suddenly confronted with a new challenge. And it’s still a good 40 minutes before