A detailed overview of the mixing functions and scene display panel (including input source and channel assign functions) of the king of cassette multitrack "Portastudios", the Tascam 688 Midistudio. Much of this conceptually applies to the 644 Midistudio as well. If you own a 688 or a 644 and get lost navigating the control surface, or you want to expand your command of what is a relatively powerful mixing console, maybe this video can help. Enjoy!