Listening to the FL OST while working on page 2 of the novel, it's really interesting how they have a few tracks that almost feel like they're meant to be an audio drama segment of sorts. For example, "The Raging Lion Roars (Forgo Leon)" in CD4 is basically the same as the base "The Raging Lion Roars" track in CD3, except it has audio of Leon's attacks playing over it. Maybe the booklet explains their reasoning for including segments like these better, but it's very interesting either way.