You are doing a great job with this podcast! A lot of information, but at the same time, so accessible to all people. I only disagreed with your ample use of Jonas Kaufmann in your Voice Types: Tenor Podcast. I personally think he's an example of a singer who has done nothing but harm his voice (cancelling various engagements this year, 2016), and is a prime example of "voce ingolatta", which is a shame. For an upcoming podcast, you should focus on possible voice defects, which I believe could be done, while maintaining an strictly educative, objective perspective.
Cheers.
