I just watched a tutorial on the AP Piano youtube channel about how to make piano videos, which brought me here eventually. In the tutorial they talk about using a "green screen" to cover the floor and the piano stool. I suppose my question is: what's the best way of isolating the video of the actual keyboard and your hands from the surroundings? Is using "green screen" material the only way or is there a better way? And if so, how do you remove the green colour in the Seemusic app?