Photo Flash: 'Miranda Sings,' Burgess, Blackhurst And More At Birdland's CAST PARTY

After Monday night's Tituss Burgess Broadway at Birdland concert, everyone stuck around for a jam-packed Cast Party, hosted by Jim Caruso.

Special guest Miranda Sings gave an impromptu voice lesson to Ariana Grande (13), then performed her cleaned-up version of "Dance: Ten, Looks: Three," much to the delight of the Miranda-fan-heavy crowd.

Also performing at the extreme open mic were Scott Meeds (Jersey Boys), Klea Blackhurst (Everything the Traffic Will Allow at the Snapple Theatre), Ruby and Ava Locknar, Hilary Kole, lyricist Lori Lieberman ("First Time Ever I Saw Your Face"), jazz violinist Aaron Weinstein, Marilyn Maye, Chris Dilley, Colleen Ballinger, Clifford Gaschler and Ruby Rakos, and Tituss Burgess himself, who stuck around for the festivities!

Photos by Stephen Sorokoff