Originally Posted by rowuk

To keep this politically correct: not all players that have had and broadcast many professional study opportunities play nintendo. Many players are less spectacular than the website would indicate...........

Originally Posted by rowuk

There is actually no line. One lesson is enough for the credential.
It is just proof that credentials are not a deciding factor - recommendations are. If you want lessons and call Marvin Stamm and he says, I don't have any time but check out xxx - that means something. In the past, I have always gone "to the top" with my request for lessons. Sometimes it worked, often I was deferred to some other AWESOME teacher. In 40 years of playing, I have only had one teacher that didn't work out.
The same goes with recommendations for gigs. If Marvin can't and says call xxx, that has weight!
I am usually wary of a three page list of teacher credentials. Every good teacher has their own playing style and leaves some stamp on each of the students. Running to tons of teachers to me means that the student is going wide instead of deep. The playing is often the same way - lacking depth!

Originally Posted by robertwhite

In a bio, this is perfectly fine. The only real difference in a resume is that dates are usually included.

You might say "additional study" or "additional lessons" or something like that before John McNeil, et.al. since you also "had lessons" with your primary teachers.