Because we have had several discussions about the techniques that help singers develop their voice and protect their vocal cords, I decided to look for the Estelle Liebling Vocal Course books on the internet. I have the book for soprano. Even with a course book, if you are serious about developing your voice, it is advisable to find a good voice teacher. I found a page on the internet that sells not only the Liebling course books, ($7.95 ea) but also many other books on vocal music.
Best-Selling Vocal MusicAlice in Montana