We start music with a basic recorder (Ravel has been a good brand) and recorder instruction book (Hal Leonard Corp's "Recorder Fun!" instruction book).
For art this past year, we had "Tea & Art" each Friday. We worked through Techie Homeschool Mom's
Famous Artists Online Unit Study (Volume 1). It was excellent, both content-wise from my perspective and enjoyment-wise from the kids' perspectives. One week we would do the learning part (learn about an art movement and artist, write a summary of each) and the next week we'd do the creating part (an art project based on the art movement as well as a slideshow summary of what you learned the previous week). At the end, you have your own self-created written summary and slideshow of the artists/art movements you learned about throughout the course.