I made something like this back a while ago, but it still bugs me.
if you type in this command:
/playsound minecraft:block.note_block.pling player @a ~ ~ ~ 100000 0.5 1
It will act like you typed in this command:
/playsound minecraft:block.note_block.pling player @a ~ ~ ~ 100000 0 1

What REALLY bugs me is that if you place a noteblock, you are able to access the sounds of .1, .2, .3, .4, and .5. Why doesn't it work with playsound. If playsound had more accessability to the pitch, it would make much better toned maps.

Though last time I made this, it was considered invalid, so I'm starting to think this is intentional.
Is it?