The group will celebrate with a launch event at INC Lounge.
Chenoweth is set to be inducted into the Hollywood Bowl Hall of Fame.
Espinosa's nominated single "Stone Cold Sober" is featured on her debut solo album Look Around.
The choral work will play Avery Fisher Hall this October.
The free show will take place before matinees on May 21.
The band will celebrate its new album, …and then you shoot your cousin.
The new concert series is held at The Players.
Alex Timbers and Michael Friedman's musical premiered last summer at Shakespeare in the Park.
Betsy Wolfe of Bullets Over Broadway and Jessica Phillips will sing the music of the Oscar and Grammy winner.
Glee star Jane Lynch will join the Broadway star in his April performance.