This site provides free streaming access to Bart's music, either via MP3 sound files directly or by employing YouTube videos or Spotify audio (see menu at top). Also, some works will have download features for scores and performance audio to enable performances. Music is organized chronologically in five pages.
Barton McLean's Music
Click on top menu for introduction to each period. Then pull down from the menu specific compositions (For mobile devices click on the + sign).