The Bay Area Youth Singers, the Bay Area Chorus, and acclaimed composer and conductor Nick Page will perform together in a 10th anniversary celebration for the chorus at 4 p.m. Sun., Feb. 19, at Clear Lake Presbyterian Church, 1511 El Dorado. The event will feature performances, folk singing, audience participation, and music education. Page has led the Emmy Award-winning Chicago Children's Choir and the Boston Mystic Chorale and is the author of three books and nearly 100 choral pieces. Advance tickets are $10 for adults and $5 for students and children at bayareachorus.seatyourself.biz. Prices at the door are $5 higher.