Guest Stars Aya Cash as Joan Simon Jake Lacy as Ron Peter Scolari as Mel Lin-Manuel Miranda as Roy Scheider Kelcy Griffin as Debbie Allen Co Starring Chandler Head as Nicole Fosse Juliet Brett as Nicole Fosse Paloma Garcia-Lee as Adrienne Ari Brand as Danny Peter Chursin as Christopher Chadman Matt Wall as Fred Ebb Adrienne Lovette as Diniz Aaron Krohn as Henry Stephen Plunkett as Paul Grantner Sean Patrick Doyle as Michael O'Haughey Lindsay Nicole Chambers as Leland Palmer Jeff Blumenkrantz as Lonnie Tyler Hanes as Jerry Orbach Meredith Garretson as Bridget Hadley Robinson as Caroline Austyn Johnson as Erzsebet Foldi Aurora Leonard as Phoebe Jim Ferris as Casting Director Ryan Avalos as Sam Wyatt Cirbus as Sean Fosse Henry Dammacco as Leif Fosse Sean Fosse as Production Assistant Amy Justman as Adult Nicole Landen Lomot as Noah Fosse David Rowen as LA Theatre Pianist