Penny Gore presents highlights from concerts by the BBC Symphony Orchestra and BBC Symphony Chorus, who celebrate their eightieth birthday in 2009. 2.00pm Tang Jianping: Sacred Fire, for solo percussion and orchestra Wang Beibei (marimba) BBC Symphony Orchestra Tan Dun (conductor) Guo Wenjing: Concerto for bamboo flute Tang Jun Qiao (bamboo flute) BBC Symphony Orchestra Tan Dun (conductor) 2.40pm Tan Dun: The Map Anssi Karttunen (cello) BBC Symphony Orchestra Tan Dun (conductor) 3.40pm Mozart: Mass in C minor, K427 (Unfinished) BBC Symphony Chorus BBC Symphony Orchestra David Robertson (conductor).