This class is a little different, there is no music or exercise, there is no practical part, it is a theoretical class, but it is very important for you to be able to enter the real world of improvisation. It is inserted in the course as extra content – it is not mandatory. It is purely a theoretical class, perhaps with a less interesting approach for you. But I recommend that you watch and re-watch it if necessary, use an online resource for research if any term is not so clear, and understand that in knowing the minimum of music theory, you will come to better understand the instrument, the scales, even improvisation and its way of playing, developing intimacy with the instrument.