When learning to Riff, it's easy to think that it's all about fast moving notes. Yet, there are actually many other nuanced changes that occur during Riffs. Changing between VOCAL REGISTERS during a Riff is an example of this. A great way to practice this difficult and subtle vocal skill is to try yodeling exercises! Move back and forth between Chest Voice and Falsetto while singing an "EE" vowel on a 1-6-1-6-1 interval. Master this exercise at a slow tempo and then increase the speed. Soon the yodel skill will become so natural for you that you can easily incorporate it into your Riffs. Being able to change registers while Riffing will add a new ear-catching dimension to your Riffs!