Viol

So you find that the devil is a musical being with vials, tabrets, and pipes in him.

Now a vial, like violin, V-I-O-L, is a stringed musical instrument.

A tabret, like tabor, is a small drum, and pipes, of course, are wind instruments.

So the devil is composed of all the instruments, wind instruments, stringed instruments, and percussion instruments.

One of the three.

The Viola di Gamba.

Exactly, which is not the ancestor of the cello.

No, I didn't think it was.