This video takes a look at the musical structures hierarchy of the Tetrachords.
The highest level are SONGS. You can have 8 Songs.
Accessible by holding SONG and using the 8 RGB buttons to select the SONG.
Each SONG contains 8 PROGRESSIONS. Accessible by holding PROG and using the 8 RGB buttons.
Each PROGRESSION contains up to 8 PATTERNS.
By default PATTERN 1 is active and selected. The white pills above the buttons represent the currently playing and currently active PATTERNS.