The annual Broadway Cares event will take up residence at the New Amsterdam Theatre.
Jeremy Herrin will make his Broadway directing debut on the project.
Askins is the author of Hand to God, which heads to Broadway next year.
Josh Nelson will play folk musician Shlomo Carlebach.
Halley Feiffer will debut her comedy in January with the Atlantic Theater Company.
The new musical by Itamar Moses and Michael Friedman celebrated its off-Broadway opening last night.
The lab production of the new musical will be directed by Jim Ortlieb.
The drama features composition, arrangement, and music direction by Bongi Duma.