Josh Groban is best known for his epic power ballads but if you’re like me, you know the singer from places like Jimmy Kimmel Live’s “I’m F****** Ben Affleck” as well as a big screen appearance in Crazy, Stupid, Love. and TV on The Office. Now the popera star is living out a childhood fantasy: sharing the screen and a song with the Muppets.

How was it for the superstar sharing the screen (and a song!) with the superstars? “They are my childhood heroes. To be on set with them, to seem them live and in person, to be able to sing with them and then be able to see the artistry of puppeteering to life was really inspiring and incredible to see.”

Since the Muppets have been international superstars for over 30 years, were there any diva attitudes on set? (We’re looking at you, Miss Piggy!) According to Groban, not in the least, saying, “They were amazing to work with. They take direction so well!”

In true Muppet movie fashion, Groban finds his character was caught up in some silliness in the movie. “I’m locked up in a Russian gulag, for unspeakable crimes, although in Russia you don’t really need any unspeakable crimes. Juggle on the street and you’ll get locked up there and then I have to sing to get my freedom and Tina Fey was really, a very strict jail keeper and was there to let me out for a few precious moments and then she throws me right back in. ”

As a life long fan, does Groban have a favorite Muppet adventure? “I love them all just the same, they’re all instant classics and so to be a part of the newest one is a great honor.”

For more melodic goodness with Josh Groban, check out his appearance on the Nerdist Podcast. Muppets Most Wanted starring Kermit The Frog, Ricky Gervais, Tina Fey and Ty Burrell opens in theaters this Friday.