I'm always interested in such documentaries, people trying to grow stuff using different techniques, it's just interesting to watch. I can always learn something usefull by paying attention to what they show and explain but in this case I got really annoyed at one point. What the hell were they thinking by singing during the entire documentary? It's cringing to listen to, I'm pretty sure the only people that liked to hear them singing were themselves. Not only is the singing really bad, the lyrics looked like they've been written by a six year old. So yes I can say it was really disappointing how this documentary was made. The material is really interesting, the execution of the documentary on the other hand was close to awful and that's thanks to those two bad singers. A missed opportunity to make something great.