The Chord Strip and Chord Carousel provides a real-time feed of chords synced with the music video. The detected chords roll by from right to left.
In the middle of the Chord Strip is a vertical white line that represents the current playback position. To play along, simply play the chord that is in contact with the vertical white line.
If you are following the Chord Carousel, the chord diagram at the center of the carousel is the active chord and the chord to its right is next to be played.