In just 2 hours, we did a MULTITUDE of things! We learned to read beats and rhythms, read musical notes, learn musical terms and even played barred instruments - for a class with students who largely had no background in music! It was amazing that in half hour, we were able to practice and play Purcell's Cannon in C - which sounded amazing to my ears.
I can foresee myself doing this with my Stage 2 or 3 class in the future. I feel that in learning to read music, I could incorporate Math into it. In introducing beats and rhythms and the number of counts of each bar pattern or each note to the students, I could make a little Math activity out of it!
I found a couple of youtube videos of Grade 3 and Grade 5 students playing the very same piece. It's a great way to slowly introduce students into gaining confidence through reading and playing music.