dr. crouse started in 2011. the students came from similar backgrounds and were all motivated to learn music at the harmony project. half the kids were selected to start music study then and the other half, the control group waited a year to begin. dr. crouse's team took a mobile testing lab to l.a. at the beginning and once a year for two years to assess the change in kids brain response in specific areas important for good reading and learning skills. what are the tests like that you do on the kids to measure these things? >> we are interested in rhythmic skills. we ask them to tap along with a steady rhythm. >> now we are going to tap faster. >> if you present a beat on a met metronome that ability is linked to reading ability. we ask them to listen to words or parts of words. >> imagine you are at a party. there will be a woman talking and several talkers in the background. >> we have them listen to sentences presented in noisy backgrounds and they have to repeat back as much as they were able to hear. >> th