Zach,

If you go on to Jussi Bjoerling's website www.jussibjorlingsociety.com you will
read an entire discussion about his techniques and delivery of sound. I myself
have studied his technique because he is my vocal hero. I even had the thrill of
hearing him before he died but I was only nine years old at the time and too
young to truly appreciate it. Good luck.

Norm Hollander