Raphael was an assistant and student under the painter

Pietro Perugino

Explanation:

I am assuming you mean Raphael Sanzio, since he is the only painter i can think of who is known by his first name.he worked under Pietro Perugino but some people believe he had some training from Timoteo Viti before his apprenticeship but I think the best answer to your question would be Pietro Perugino.

answer/// priests singing psalms and the congregation singing responses;