"It's song time, but first Blue and Steve listen to sounds and determine their appropriate musical instruments, remember and repeat the line of a song, and determine which chick is singing in tune to Row, Row, Row Your Boat. Steve and the children at home deduce what Blue's favorite song is."
It was song time but Steve cannot figure out Blue's favorite song. They play a game of Blue's Clues to find out. Steve steps on the first clue, a duck, and draws it in his notebook. Later on, Steve and Blue try to find the right sounds for each musical instrument. Immediately after that, the phone rings. Steve answers it and it was the felt friends on the phone who had a song of their own. Steve tries it but messes up. He listens again. He gets it right and hangs up the phone. Steve sees the felt friends Fifi and Freddy.
They both sang Boom-ba-cha-cha-la-la boom-boom-bop. Steve sings along with them. Then it was mail time. Steve reads the letter. After that, Blue and Steve skidoo into a picture of a farm. Immediately after that, Steve finds the second clue, a barn and draws it in his notebook. Steve had two clues to what Blue's Favorite Song is which were a duck and a barn. Steve had to find the third clue to he can get more information. Steve and Blue saw some chicks who were putting on a song show. They were going to sing "Row, Row, Row Your Boat." They figure out the right verses and the right key for the song. Soon after, Blue and Steve skidoo back home. Not long after that, Steve hears the piano playing off screen. Steve sees the third clue on a piano key. Steve touches the piano key that the little paw print was on.
After tapping the key it was on a few times, the paw print moves to different keys and Steve realized he just played a little tune that went "C-C-C, G, A-A, G". He draws the third clue in the notebook. He goes to the thinking chair to put all the clues together. Steve thought it was Rubber Ducky Had a Barn. But the answer was Old MacDonald Had a Farm. After figuring out Blue's Clues everybody (including the musical instruments, the felt friends, and the chicks) got together for song time. Blue was on piano and Steve was on guitar. They play the tune "Old MacDonald Had a Farm". Not long after that, Steve plays "The So Long Song" and the episode ends.