According to the video by MusicTechHelpGuy, here are the key features of Logic Pro 11

• Stem Splitter: This new feature allows you to isolate vocals, drums, bass, and other instruments from a stereo mix. This can be useful for remixing, remastering, or creating new music from existing recordings.

• AI Players: Logic Pro 11 introduces two new AI-powered session players: a bass player and a keyboard player. These players can follow your musical arrangement and create realistic bass and keyboard parts. You can control the complexity, intensity, and voicing of the parts, and you can even create your own custom patterns.

• Chord Track: The chord track is a new global track that allows you to create and edit chord progressions for your music. The session players will follow the chords in the chord track, so you can easily change the chords in your arrangement without having to re-record the bass and keyboard parts.

• Chroma Glow: This is a new effects plug-in that is modeled after several real-world hardware saturation units. It can be used to add warmth, grit, and character to your tracks.

• Realtime Bounce and Place: This new feature allows you to bounce and replace regions in real time. This is useful if you work with outboard mixing hardware or hardware synthesizers.

• Other updates: Logic Pro 11 also includes a number of other minor updates, such as new key commands for controlling the Marquee tool, under-the-hood enhancements, and new sound library content.

Overall, Logic Pro 11 is a significant update that adds a number of powerful new features for music producers and composers.