Art.com
and you can search for anything, and customize the frames and matting. 15 years ago i bought a number of framed music art pieces for my barn music room hallway, from Art.com, and have been very happy with it.
for the entrance to my barn i went to a musical instrument store and purchased inexpensive used instruments; a guitar, a lute, a clarinet, and a trumpet, and a sax, and mounted them on the wall. never get tired of how it looks.