April 13: Performance of traditional music by Nguyen Thuyet Phong and ensemble. Time and place to be announced. Organized by the Vietnamese American Arts and Letters Assn. (VAALA). (714) 537-8352.
* April 26 and 27, 8 p.m.: Premiere performance of a symphonic/choral work by Elliot Goldenthal reflecting the human experience of the Vietnam War, in observance of the 20th anniversary of its end; commissioned by Pacific Symphony, which will perform the piece with the Pacific Chorale and soloists and children from the local Vietnamese community. Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa. $14-$41. (714) 755-5799 or Ticketmaster, (714) 740-2000.
* June 3, 3 p.m.: Premiere performance, by the Pacific Symphony Institute Orchestra, of "1975," a symphonic suite by Khoa Le. Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa. Free tickets available at the box office on day of performance. (714) 755-5788.
* July 22: Performance of songs composed in Communist concentration camps. Time and place to be announced. Organized by VAALA. (714) 537-8352.
* Aug. 26, 8 p.m.: Performance of traditional music by the Lac Hong Music Group, Robert B. Moore Theatre, Orange Coast College, 2701 Fairview Road, Costa Mesa. $15. (714) 554-6878.