Get ready for a wonderfully nerdy Broadway deep dive! In this episode, host Marc Bonanni of Broadway by Ghostlight sits down with authors Andrew Gerle and Joseph Zellnik to celebrate their dazzling new book The Periodic Table of Broadway Musicals. They’re joined by very special guest—three-time Tony nominee and Broadway icon—Mary Testa for a lively talkback, signing, and live podcast recording that blends history, humor, and show-tune devotion.

Inspired by the classic periodic table, the book reimagines 118 essential musicals—from A Chorus Line to Rent—as elements, complete with “atomic” symbols, clever original artwork, cast lists, trivia, and insights that reveal how each show shaped the evolving chemistry of Broadway. Whether you’re a superfan, a theatre student, or simply someone who loves a good poster and a great story, this conversation uncovers the inspiration behind the project and the unexpected alchemy of musical theatre itself.

Tune in for laughs, lore, and a whole lot of Broadway love—all with a full-size pull-out poster waiting in the wings.