This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Viola da Gamba Isenheimer Altar. en December Image from the Isenheimer Altar showing two angels playing Viola da Gamba and Viola da Braccio Front Angel Playing Viola da Gamba but holding the bow incorrectly It is possible that the angle was originally planned to stand on the other side with the left hand and the artist corrected