Znoring Zedzzzz (NSF)
By SketchMan3 on Oct 4, 2013 5:47 pm
Playing around with Zxx command to modify the volume of the NES Triangle channel (and by proxy the Noise channel)
Source here: http://famitracker.com/forum/posts.php?id=4497&pid=51683#51683
Edit: and unfortunately apparently chipmusic.org's NSF Player doesn't support Zxx command triangle volume manipulation 
You'll have to download and listen to it in Nestopia or NSFPlay or something else like that to hear the volume changes.
This submission is licensed by author under CC Attribution Noncommercial No Derivative Works (BY-NC-ND)