It's called the "Mid-Atlantic Accent" and was very commonly used in film and radio up until the 40's. https://www.youtube.com/wat…

I heard it as "Egged on like Seder plates."

I thought he was great as Prince Hans in Frozen, and then I saw this video of him doing a concert with the Mormon Tabernacle Choir and yeah….. I'm watching this show for him, much more so than Rachel Bloom.