Jane Lynch will host the benefit, which also stars Sting and Patti LuPone.
The Broadway casts of Wicked and Once have joined the star-studded lineup of performers.
Miranda is now just an Oscar shy of an EGOT.
Nominees will be announced on August 21.
The event welcomed Courtney Love, Frank Langella, Gay Talese, Barbara Walters, and more to the Delacorte Theater.
Lynch will also be joined by Broadway veteran Cheyenne Jackson for the concerts.
Glee star Jane Lynch will join the Broadway star in his April performance.
The Emmy winner and Broadway veteran will perform four concerts at 54 Below.
Zealot author Reza Aslan and The Office's Rainn Wilson will cohost a post-show discussion.