@BBPWN1 A harmon is entirely metal - it has a central chamber that produces a more vibrant and shrill sound with a small curved opening in the middle that allows sound to come out. A bucket mute, on the other hand, doesn't have the same curved opening at the tip (instead it's a flat surface) and ...
He Films the Clouds Pt. 2, by Maybeshewill. This video only uses the second half of that song.