On Two Against Nature, Donald Fagan and Walter Becker have released an album with a very rare element in popular music: rich instrumentation. The CD is just a swirl of sound from start to finish with a number of tasteful textures. The listener hears every thing from brassy horn pops to velvety electric bass to twangy wah-wah guitars to just about every vintage keyboard ever invented. Each instrument adds its own contour to the music making for a very enjoyable listening experience where the listener keeps hearing new things throughout the album. The sound has so many layers that it is a very difficult but interesting task to dissect everything that is going on.