Well of course, if I want to get an intelligent answer!!
As a singer, I not only talk to myself but if I am concentrating on something, I can find that there is some particular song or music that have a connection with what I am doing, so there will be little bursts of music . Once , not long ago, I had been walking and had to sit down to rest on a bench. Gazing into the distance my brain was thinking through a problem that I needed to deal with, but was a little surprised when a gentleman came over to kindly say how much he had enjoyed my singing ( I hadnt realized that I was singing aloud!(