Original lesson: Ben's Vibrato Odyssey 5 by Ben Higgins
I'd like to give a special thanks to Mr. Ben Higgins for creating this lesson and to Cosmin for opening my eyes to how bad my vibrato really was (and all this time I thought I had the world's best vibrato heheheh).
I lost the callous on my middle finger and it hasn't calloused over yet so my finger is a bit under the weather after this one and I shall retire him for the day (unless someone cuts me off on the highway).
Thanks!