The 55th season of the acclaimed family program features a star-studded lineup of musicians that would be the envy of any summer festival: SZA, Chris Stapleton, Noah Kahan, Reneé Rapp and Samara Joy.

(Photo by Slaven Vlasic/Getty Images for HBO) "SZA is really cool — really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA," he said.

“SZA is really cool — really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA,” he said. “Elmo was feeling really, really happy ...

So, Elmo learned all about gratitude with SZA,” he said. "Elmo was feeling really, really happy after his playdate with Miss Reneé. It was a really beautiful song.

“SZA is really cool - really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA,” he said. “Elmo was feeling really, really happy after ...

“SZA is really cool — really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA,” he said. “Elmo was feeling really, really happy ...

"SZA is really cool — really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA,” he said. "Elmo was feeling really, really happy after ...

"SZA is really cool — really talented. And ‘gratitude’ was a new word for Elmo, too. So, Elmo learned all about gratitude with SZA,” he said. "Elmo was feeling really, really happy after ...

No one is more excited than Elmo himself. “There's a lot to learn ... with us on ‘Sesame Street,' like Miss Reneé Rapp and SZA! Chris Stapleton, Noah Kahan, Samara Joy — lots of great ...

So, Elmo learned all about gratitude with SZA,” he said. “Elmo was feeling really, really happy after his playdate with Miss Reneé. It was a really beautiful song.