Computer science is useful in many domains : information systems, communication, security... and art. Many artists have used computers to create or perform their own creations. In those cases, they become powerful creation tools.
Using computers for music is for me one of their most interesting features, since I studied both music and computer science.
Another great application of computers is the way we can use them for teaching. As they are able to provide many education tools (interactive learning, mathematics, science...), we can imagine that in the next years a lot of things will be taught and learned with computers.
Then, realise a computer-aided music learning system seems to be a good idea...