He subsequently recorded the concerto commercially for Deutsche Grammophon .
At the 2009 BBC Proms , he performed the world premiere of Unsuk Chin 's Cello Concerto , which Chin composed for Gerhardt .
Gerhardt subsequently recorded the concerto commercially for Deutsche Grammophon .
At the 2009 BBC Proms , he performed the world premiere of Unsuk Chin 's Cello Concerto , which Chin composed for Gerhardt .