Music Theory Worksheets - Interactive Notebook Music Activities This bundle of engaging music theory worksheets cover music curriculum expectations for grades 1, 2, and 3. All the “fundamental concepts” (the elements of music) for rhythm, melody, timbre, and expression are represented. When I use these music theory activities in my classroom, I use it as one of the stations in my music centers (so that their notebook can be taken with them to the centers and used as a reference, as well as holdi