nytimes September 17, 2021 12:00am Sondheim Is Writing a New Musical, and Hopes to Stage It Next Year #ivesdavid #sondheimstephen #lanenathan #petersbernadette #theater #lateshowwithstephencolberttvprogram #news Sondheim Is Writing a New Musical, and Hopes to Stage It Next Year The actor Nathan Lane said he had recently participated in a reading of the show, titled “Square One.”