When attempting to play the note.harp High G sound through a command block, it turns up with: '' is not a valid number, and does not play the sound.
Steps to reproduce: Plug this command: /playsound note.harp @a[r=200] ~ ~ ~ 2 1.8 0.1 into a command block, then run it.
not, this one it diffrent, that one is about playing sounds to mobs
also invalid as you have two spaces after the player selector in the command block