FILE - In this March 27, 2010 file photo, conductor Sir Simon Rattle gestures prior to a dress rehearsal for Richard Wagner's opera "Goetterdaemmerung" which was part of the Salzburg Easter Festival in Salzburg, Austria. Simon Rattle is set to leave his job as musical director at the London Symphony Orchestra to lead the Munich-based Bavarian Radio Symphony Orchestra. The the two organizations said Monday, Jan. 11, 2021 that the acclaimed conductor will become the German orchestras chief conductor in 2023. (AP Photo/Kerstin Joensson, File)LONDON – Simon Rattle is set to leave his job as musical director at the London Symphony Orchestra to lead the Munich-based Bavarian Radio Symphony Orchestra, the two organizations said Monday. Rattle said he was “thrilled” to accept the post and honored to succeed conductor Mariss Jansons, who died in 2019.