I am an elementary general music teacher, teaching grades 1-5. I brought in my PS2 to try out KR with my 4th and 5th graders, since I was having trouble getting them to sing for me. When they got a chance to don the headset or grab the handheld mic (which now comes with the latest version of KR), all inhibitions were gone. I could get a general idea of where that kid's voice really was. Of course, my whole curriculum isn't based around KR, but it is definitely supplemented by the help of this "way cool" video game. Even my boys run to music to see if it's KR Day. That alone is good enough for me.