"It's the Letter of the Day" is a Sesame Street song that debuted in season 47 to introduce the letter of the day. Unlike the previous "Letter of the Day" song, this one does not appear in every episode (rotating occasionally with the previous song). Abby Cadabby leads the song, backed up by the other Muppets, as they introduce the letter of the day. Big Bird, Rosita, Zoe and Elmo get solo lines among the chorus (which also includes Grover, Cookie Monster, Bert and Ernie).