This is what we found on Wikipedia regarding the Six The Musical:

Six (stylised in all caps) is a British musical comedy in the style of a pop concert. Its music, book, and lyrics were written by Toby Marlow and Lucy Moss. It is a modern retelling of the lives of the six wives of Henry VIII, presented in the form of a singing competition. In the show, the wives (Catherine of Aragon, Anne Boleyn, Jane Seymour, Anna of Cleves, Katherine Howard, and Catherine Parr) take turns telling their story to determine who suffered the most from their shared husband, but ultimately seek to reclaim their individual identities and rewrite their stories.

The musical premiered at the Edinburgh Festival Fringe in 2017, where it was performed by students from Cambridge University. Six premiered in the West End at the Arts Theatre in January 2019, and has since embarked on a UK tour. It premiered in North America in May 2019 and on Broadway in February 2020. Following a hiatus due to the COVID-19 pandemic, it officially opened at the Brooks Atkinson Theatre on 3 October 2021 and has since launched additional touring companies.