Gekisai Ichi is the so-called unified Kata. It was created for both Naha-te school and Shuri-te school, so even if you are not a Goju-ryu stylist, you can understand it and can perform it easily.
I translated historical articles about Okinawan karate written in Japanese into English. Enjoy also my video clips of Kata of Okinawan Goju-Ryu Karate and Ryukyu Kobudo.