"music concert" not a "theater"

at nov 28 2012 a ensamble string music group make a concert in taman budaya padang,sumatra barat the player consist of a teenager,a child, and a collage student they are very talented they play violin,viola,biola dandy enaught , this, check it out the video. you can see that video in here : http://www.youtube.com/watch?v=QmvmJfaHREc&feature=plcp it's a second session, they use a trick in this session actually, they called "petik" in a half of this second session we can hear that some applause , and the music sounds like a cartoon movie my father's said. this, i give the link : http://www.youtube.com/watch?v=vKO0cxaz7yQ&feature=plcp and the last is a third session this is the link : http://www.youtube.com/watch?v=GElFG_0Niq0&feature=plcp actually i've record so many videos but im so sorry i can't upload them tonight maybe i'll post it later