By the way, painting that Charley Noble refers to can still be seen, although the URL has changed. Here it is:

Ella Madison and Dahlov by Marguerite Thompson Zorach, ca. 1919, at Williams College Museum of Art.

There doesn't seem to be any reference to music in the painting—unless that's a cubist/abstracted guitar in the background; I can't make out what it's supposed to be.

For those interested in this sort of thing, see the thread Paintings of folk musicians and dancers (which is probably due for an update).