I tried to do it in different ways but nothing comes out. My code looks like this (I know that interpolate_property method doesn't indicate what is needed at all, I showed it for clarity):
var tween = Tween.new()
tween.interpolate_property(AudioStream, "volume_db", 0, -80, 1, Tween.TRANS_QUART, Tween.EASE_IN, 0)
I want to interpolate audiobus I need (in my case it's Music, index 1), not master audio.
Is it possible? If so, how?