I am working on my 1st 3d photo montage. One of the effects that I wanted to make happen is to have a glow effect flash when the soundtrack reach a certain amplitude. I have read several posting on this but so far I have had trouble finding one that made sense to my neophyte understanding of AE. Basically when the song reaches it's highest amplitude I want the glow to fire off. So far none of the expressions that I have come up with work. Any help would be greatly appreciated.