Dee Does Broadway is the second album from Dee Snider, frontman of Twisted Sister, after 12 years without any release. It was produced by Dee, grammy winning Patti LuPone and Bebe Neuwirth. Guests in the album include the Grammy and Emmy award winning Cyndi Lauper, Clay Aiken, Nick Adams and many others.
Dee Snider had many featured vocalists as a part of his second album.
At least three singers are listed as guests on the album, along with "many others" so we know he had many featured vocalists. However "featured vocalists" is a different way of saying "guests" and so the computer probably didn't know to look for that.