I'm making the video start with the last piece on purpose, because it's the one I like best, and the opening prelude will probably bore people too soon.
Score and parts can be seen here: https://albertdelaf.com/op-15-four-pieces-for-saxophone-quartet/
I really liked the final piece! Of course, I listened to it first because of the video... I thought it was really exciting and creative, and despite the harmonic complexity, it's very accessible. I'll listen to the rest of them a bit later. Thanks for posting!