After listening to the video the one that mostly interested me was mixer and the track view. why because the mixer allows the person that is using it to adjust the volume, and automation. The track view is where you display your beats and you can also edit your track beats.
After listening to the video my three roles I am interested in are music producers, music composers, and sound designers. Music Producers are professionals who manage the production of music recordings. Which means that they make beats for the recording artist. But, the music Producer is the one I want to learn about the most.