Baby is a musical with a book by Sybille Pearson, based on a story developed with Susan Yankowitz, music by David Shire, and lyrics by Richard Maltby Jr. It concerns the reactions of three couples each expecting a child. The musical first ran on Broadway from 1983 to 1984. Plot Act I Lizzie and Danny are a young couple still in college living together, and Danny is a musician. Alan and Arlene are a couple in their 40s who have just come back home after a trip together. Pam and Nick are a young couple in their thirties who want a baby more than anything. The couples sing a song about hopeful change for the future and how the year is passing by. Lizzie, Arlene and Pam all go to the doctor for different reasons- Lizzie thinks she has the flu, Arlene has a check-up, and Pam has missed her period again. At the doctor's office, each couple finds out the woman is pregnant ("We Start Today"). Danny decides if Lizzie is to keep the baby, they must get married, which Lizzie does not agree with. They then sing a song about how their child will be a perfect mix of both of them ("What Could Be Better?"). While exercising together, Arlene tells Alan that she has been pregnant for about a month. While singing, they surmise that she must have gotten pregnant on their anniversary trip the night they both had too much champagne. Alan is ecstatic about having the child, while Arlene seems unsure. Meanwhile, Pam and Nick are ecstatic that Pam is finally pregnant. They sing to their unborn child about how loved it will be and how they will do everything for him or her. Arlene and Alan reminisce about their past. The three couples then sing together about the babies they are to have and how they will love them ("Baby, Baby, Baby"). Lizzie, Pam and Arlene are all seated in a doctor's office. Pam shows off the basketball she has received from her team at the baby shower they gave her. She tells Lizzie and Arlene about how excited she is to be pregnant. They then discover that all three of them are pregnant. They all speak to one another about their excitements, concerns and wisdom about having children. Pam then sings about how she wants to experience everything while pregnant, from stretch marks