Does anyone know what Gwyneth Goes Skiing actually is?

Gwyneth Goes Skiing is currently doing a week of performances at the SoHo Playhouse. I've seen it described as both a musical and a play with music. It's supposed to feature vocals by Darren Criss and Cat Cohen, but I don't think either are appearing live in it, and for Criss that would be outright impossible. 

Are the songs just being lip synced?

If you want to know more about the show in general as it was at Edinburgh, NYT wrote about it here: https://www.nytimes.com/2024/08/20/theater/gwyneth-paltrow-ski-trial-edinburgh-fringe.html?unlocked_article_code=1.q04.URAG.qpVVyl2Hyd-Y&smid=url-share

Gothamist: The saga of Gwyneth Paltrow’s ski trial is now an off-Broadway musical

I recently saw this production while I was in Northern Ireland. Was really looking forward to it but left disappointed.