I just joined TAN. I came across the sheet music for La Cucaracha posted by Mr. Kott and adapted by Sheila Lee. Is there an explanation for the notation used? I have some music for a Hohner Club IIB which uses the Handshuh adapted note system which is somewhat similar. Although I understand in principal how the note system works, I need an explanation. Also, are there other traditional Mexican songs or corridos written in Sheila Lee's system? I've been looking for Mexican diatonic sheet music for 30 years without success. Thanks.