Songs double as life lessons on Sesame Street, from an alt-R&B-pop track about gratitude with SZA to an acoustic number about feelings with Rapp. “SZA is really cool — really talented.

The new season comes at a turning point for “Sesame Street,” arriving weeks after ... include several of-the-moment celebrities: Michael B. Jordan, Noah Kahan, Samara Joy, Jonathan Van Ness ...