For instance, it would be nice to have a whole range of tracks that have music or sound effect content in specific known frequency ranges. For instance, the Phantom Menace Pod Race, The THX intro, other movies. What I'm asking is, is there a way we could put together a list of parts of tracks of songs or parts of movies AND the frequencies. I know there's been listings here when people ask questions, but this sort of thing should become part of a language or vocabulary here. Too many times I see people discussing what they like or don't like about speakers, subwoofers and other equipment and commenting on what they like, what sounds better, what improved or worsened the sound but each person isn't even refering to what program material they are talking about. If there was a distinct list here, we could refer to it and compare each others results both in terms of how it sounds and the actual frequency response. It would be handy even if not everybody measures their frequency response in their room. At least you could comment on how your equipment sounds using a specific peice of program material and then suggestions and comparisons would make more sense. Can we make a list of this sort here?