Hello there !

With 1.12 versions (and below) we could use the playsound command like :

_{/playsound minecraft:music.credits master @a[r=..10] ~ ~ ~ 2 1}

It plays the credits sound to players in a radius of 10blocks, like all other sounds from entity or blocks. If we move away from the relative position, the volume of the sound decrease to 0 (or minimumVolume if sent)

But i tested the same command in 1.14.4 :

_{/playsound minecraft:music.credits master @a[distance=..10] ~ ~ ~ 2 1}

Here, it's different. As far as I go (if i'm on target of selector) i'll always hear sound as a volume of 2, even if there is no arg for minimum volume. I searched on 1.13 changelog and other issues here, i found nothing that says something about it.

Either it's the new feature of minecraft.music used on playsound (said nowhere where i searched), or it's a bug.

Thank you !