A student that I work with in my 7th grade programming class created the following Scratch project. He is really into music and I think he enjoyed the process of putting this together. It is important to note that he did this entirely on his own and outside of our class (that is the great thing about the Scratch program-it is a free download/install and students can put it on their own personal computers quite easily).
As a side note, I'm interested in working with other teachers and schools to try to group students together to collaborate on Scratch projects/challenges with one another. I think this would be an authentic way for students to engage in collaborating across great distances on computer science coding. Let me know if you might be interested in working on such an endeavor.
Click the image below to see view and listen to the project!