For a 3 1/2-year-old, Elmo sure has sung a lot on "Sesame Street" with some of the best musicians in the world.

But it wasn't until Thursday that the friendly red monster made his Grand Ole Opry debut, a country music rite of passage. The squeaky voiced singer's roots in the genre actually run pretty deep.

Elmo helped ring in the Grand Ole Opry's 100th anniversary this year by co-hosting with his “Sesame Street” pal Abby Cadabby. Elmo, in a little blue cowboy hat and matching shirt, teamed up for a duet alongside Lauren Alaina, while Abby Cadabby sang with Tayla Lynn, the daughter of Loretta Lynn, the late country star who had visited "Sesame Street" herself.

“We sing all the time on ‘Sesame Street,’ but um, well, being able to sing in the home of country music is amazing!” Abby Cadabby told The Associated Press prior to their performance.

Throughout the years, the "Sesame Street" gang has played and sung songs with some of country music's brightest stars, including Garth Brooks, Lee Ann Womack, Tim McGraw and Faith Hill, Thomas Rhett, Kane Brown, Mickey Guyton, Kacey Musgraves and more. Chris Stapleton stopped by Sesame Street in late July.

Johnny Cash made multiple appearances. He won over Oscar the Grouch with his song, “Nasty Dan,” about a mean guy who never laughed and was rumored to have never taken a bath. “Wow, I'd like him,” Oscar the Grouch mused from his trash can.

Loretta Lynn, meanwhile, joined for a math lesson with the Count on the song, “Count on Me.”

In their interview with AP, Elmo and Abby Cadabby said the Count always talks about Loretta Lynn. Elmo said Stapleton's song about the power of music was really great.

“Elmo got to wear his hat,” Elmo said of Stapleton. "It was a little big for Elmo, but that's OK. A really good time."

Both of them were also dreaming big about singing with Dolly Parton.

“Elmo would love to do a duet with Miss Dolly Parton,” Elmo said. “Maybe we could do ‘Jolene’ together. Come on Dolly! Call Elmo!”

“Yeah! Or ‘Love is Like a Butterfly!’” Abby Cadabby added.

“Call us! We're available!” Elmo said.