In celebration of HRH Princess Galyani Vadhana, the Department of Cultural Promotion and Opera Siam present this charity concert by the Siam Philharmonic Orchestra with concertmaster Vilmos Olah, mezzo soprano Grace Echauri and tenor Javier Agulló, conducted by Somtow Sucharitkul. They will play all 11 symphonies of Gustav Mahler. Special seats for B5,000 and B1,000 donations. RSVP at http://bit.ly/1pH8olJ.