there are 2 issues. 

1: CAVE SOUNDS

I absolutely despise cave sounds. This tracker says that the cave sound issue was  fixed in 1.16.20. It is still there. I am making a lava cast, and every time I go near the top, A cave sound plays. Its either the dark orchestra, the minecart, or the DREADED VIOLIN SCREECH. They jump scare me horribly. Every time I go in to anywhere under sea level, a cave sound plays. PLEASE FIX THIS. 

2: Water Music. 

Every time you stick your head in the water, Shunji plays. I'm not against it, but Its all that plays.