These were done in Kicad. The libraries used are in the -cache files. Please use the -cache's otherwise you can run into a lot of problems. I do not have a colorchord-specific design for the ESP-12E. I have included the generics file. The esp_onelayer3 file was what was used in the Saxophone video. A electret microphone was attached between GND and the T0 pin of the ESP. Be sure to size the R1 aproprately for your mic.