There is nothing unusual about having instrumental music playing in your head if you listen to classical a lot. Sometimes I can mentally go through a whole movement of a symphony or concerto without being able to place it. Usually it’s Mendelssohn, Dvorak, Schubert, or Mahler.
“There is nothing unusual about having instrumental music playing in your head if you listen to classical a lot.”
This is the solution to low-brow earworms, fer sher. ;^)
Actually, I consider this feature a dividend of listening to the classical composers; one can call up movements and solos, and vary the orchestrations - it’s never boring.
Otoh, Bobby Goldsboro singing something in your head can be a near-death experience! But, merely summon the shades of Vivaldi, Bach, and Beethoven, and the screeching hyenas vanish.
It works for me.