When I was shopping keyboards to try the OMB thingy, a fellow from Australia helped me a bunch. Somewhere along our conversation, relationship he referred to himself as not being a musician. He said, I'm not a musician, I'm a drummer." LOL!

I always considered someone who played a musical instrument, and knew music in the form of musical notes, or chord theory etc., a musician.

Someone who sings and especially who sings and doesn't know a Bb from a K7th is not a musician but is known as a vocalist. We had an excellent Vocalist in my first band in 1857 for the R&R we played. He was one of the best I've worked with. However, he didn't even know what key he was singing in. Would anyone who is a musician call him a musician? Think about it!

Ray Charles was a Vocalist and one of the top musicians on earth. Frank Sinatra referred to him as, "The only genius in our business." The best vocalist are usually musicians with a few exceptions. By the way Nat Cole and Frank Sinatra both played piano, so they were musicians too.