Recorded music is the advertising for the musician. I don't understand why I should pay for that advertising. What they are advertising is their ability to perform music and they will receive my money when I pay to watch them perform or purchase their merchandise.
That's a very limited view of music. Tons of music/audio workers out there neither sing nor play live instruments. Songwriters, composers, electronic musicians, recording engineers, mixers, Foley artists, etc. To them, recording is their only product.