If you’re planning to be in New York City in October, you could celebrate 20 with 30.

30 Rock, the acclaimed NBC comedy starring Tina Fey, Alec Baldwin, Tracy Morgan, Jane Krakowski, Jack McBrayer et al, will celebrate the 20th anniversary of its premiere episode with a one-night-only event at Radio City Music Hall in NYC on October 11th. Tickets for the show, which will not be televised, will be available for pre-sale on Wednesday.

Fey, Morgan, Baldwin, Krakowski and McBrayer appeared (with many others from the show’s cast) in an Instagram post on the 30 Rock account announcing the event.

“Listen up tens, a five is speaking! Please join us to celebrate the 20th anniversary of the show Tom Shales once said ‘needs a better premise and funnier dialogue… and most of all a more commanding performer in the starring role,’” Fey said in a statment.

Proceeds for the show will benefit the Boys and Girls Club of Harlem. The presale starts at 10 am ET Wednesday, with public sales beginning at the same time Thursday.

Radio City Music Hall’s statment on the event says the night will feature “games, nonsense and surprises” with the five core cast members, who will be joined by other actors who appeared on 30 Rock along with some special guests.

30 Rock ran for seven seasons from 2006-2013 on NBC and followed the wacky hijinks behind-the-scenes of The Girlie Show, a sketch comedy program run by Liz Lemon (Fey) under the leadership of network exec Jack Donaghy (Baldwin), at a fictionalized version of the NBC network. The show won 16 Emmys, including three consecutive wins for best comedy series from 2007-09.