The orchestra holds annual auditions and has an entry age of 12 , with the cutoff for membership set at 25 . A number of its members are also members of full-fledged professional orchestras such as the Siam Philharmonic Orchestra and the Bangkok Symphony Orchestra . It has twice performed in conjunction with the Siam Philharmonic Orchestra : in the Thailand premiere of Mahler 's Third Symphony , and at a gala concert in front of CentralWorld in Ratchaprasong , Bangkok , the site of the 2010 troubles , as part of an event to promote " Healing through Harmony . " The Sinfonietta receives its funding largely from government grants and private and corporate sponsorship
2010 troubles
2010 Thai political protests
Siam Sinfonietta