Luther and his stringed instrument

I always enjoyed this painting of Luther and his singing family.  The instrument must be a lute. And, the name "Luther" comes from luthier, which is a person who repairs stringed instruments.

(We know that he liked to do skilled work with wood for relaxation, but I don't think he was a luthier.  He was a poet and composer, however, among many other things.)

Note, also, the lute on the stained glass window, on the sidebar.  Song means so much to us.