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What's That Sound? is the 4th episode of Blue's Clues from Season 3.


  • Question: What does Blue hear?
  • Clues:
    • 1. Drops of Water
    • 2. A Cloud
    • 3. A Sound (Booming)
  • Answer to Blue's Clues: A Thunderstorm
  • Living room picture: A horn, then a rattle, then a rubber duck, then a car; all with sound waves
  • Skidoo location: Movie projector
  • Felt Frame picture: Felt Friends holds a Paper Cup Phone
  • Letter: Pink (US) Green (UK)


In this episode, we listen carefully to hear all sorts of different sounds. We start out hearing a noise and identify it as wind chimes coming from outside. Later, we use noises to help Shovel and Pail follow a gopher to a neat-sounding stream. Later, we skidoo into a silent black-and-white movie to fix it up by adding sound effects to it.


As we head inside, we can hear some sort of ringing sound. Steve wants to know what it is and so we try to figure it out. We think maybe it could be a set of keys, but they just jingle, they are not the ringing that is heard. We finally find out that the noise is being made by some wind chimes. We play Blue's Clues to find out what it is. Soon, the first clue, drops of water are found. We then find Shovel and Pail outside, giggling. It turns out that a gopher has shown up and he is going to lead them to a stream that makes a pretty sound. We follow him by using sound clues. First, we hear the splashing of water, then the rustling of leaves, and also the gopher's giggling. After finally reaching the stream, we decide to go for a walk and listen to some of the sounds of nature, like a frog croaking and a cricket chirping. Soon, the second clue, a cloud is found. When mail time comes around, Mailbox and Steve make their favorite funny sounds. Later, we find Mr. Salt, Mrs. Pepper, and Paprika watching a movie. The problem is that it does not seem to have any sound and Mr. Salt is not able to fix it. So, we skidoo into the movie, a black and white silent film, and help Blue to use sound buttons to add in the proper sounds that go with the images on-screen. After the last clue, a sound button that makes a booming sound is found Steve sits in the Thinking Chair. The answer turns out to be a thunderstorm. Steve, Blue, Gopher, Shovel, Pail, Mr. Salt, Mrs. Pepper, and Paprika sit together and listen to the storm. Steve sings the So Long Song, and the episode ends with the sounds of the storm.


Video Releases[]


Movie Sounds[]

Correct Sounds[]

  • Wind blowing and balloon popping (Part 1)
  • Broom sweeping and baby crying (Part 2)
  • Truck and baby giggling (Part 3)

Incorrect Sounds[]

  • Toilet flushing and doorbell ringing (Part 1)
  • Vacuum cleaner and baby giggling from upcoming part (Part 2)
  • Siren and cash register (Part 3)
  • Baby crying from part 2 (Part 3)

Movie Sounds in order[]

1. Wind blowing
2. Balloon popping
3. Broom sweeping
4. Baby crying
5. Truck
6. Baby giggling


Watch Episode[]

This episode is available for streaming on Paramount Global's video streaming service Paramount+.


  • The movie characters, Mailbox, Tickety Tock, Sidetable Drawer Freddy and Fifi didn't appear at the end because they were very busy.
  • The main music of the series is muted during the opening scene where Steve asks the viewers to find Blue and throughout the closing credits.
  • This is the only episode to not have any form of music during "The So Long Song".
  • This is the only episode to not use any form of music in the credits, just a bunch of chimes and rain and thunder sounds heard from presumably right from the couch used in the last scene of this episode.
  • This is the third time Steve wears his tan shoes.
  • This was the only episode that didn't use the fish in the Nick Jr. logo.
  • Because of the trees in this episode, we can tell that this was taken place during the fall, as this episode was filmed between early October and late November 1998.
  • It is shown that the viewers can read Steve's lips.
  • This is the first episode since Season 1 to have Blue appear four times during the credit sequence. The other episodes were Animal Behavior! and Hide and Seek.
  • The reason Blue heard the storm before it even arrived is that dogs have much better hearing than humans do.
  • This episode is the second of two episodes on the "Stop, Look and Listen!" VHS.
  • This is another episode where "No" was heard from "What Does Blue Want to Do on a Rainy Day?, Pretend Time", and "What Time Is It for Blue?".
  • This is the only time Steve freezes when singing "We Are Looking for Blue's Clues".
  • This is the second time the line "A Clue" was used; the first time was from Blue's Sad Day.
  • The footage where Blue jumps onto the screen after the Play Blue's Clues song in this episode would be used in the Nick Jr. Kids Opening bumper and Nick Jr. on CBS and some retrospectives.
  • The footage where Steve, Blue, and a gopher say, "Goodbye!" in this episode after The So Long Song while inside during a thunderstorm would later be reused in the Nick Jr. Kids Closing bumper and on some retrospectives.
  • In the credits, the animation of Blue wagging her tail returns. She also peeks over from a different angle.
  • When Steve and Blue skidoo out of the movie, Mr. Salt, Mrs. Pepper, and Paprika cheer when they jump up and down, and when they stop, Steve claps his hands three times because it was a success.
  • The baby only cries when he notices his balloon that got popped and swept, he gets sad, and he has nothing in his clutches, but instead, he laughs when he has a brand new balloon.


  • The wind chimes that Blue built from Art Appreciation appear in this episode.
  • On the table, there was Mr. Salt and Mrs. Pepper's water xylophone from What Does Blue Want to Do on a Rainy Day?.
  • In the UK and Portugal versions, Mailbox goes "Woohoo!!!" (Woohoo-uekh! in the UK version) instead of "Phwooonk!".
    • For the "blu-bleh-blah" sound, it's "bobolobolobolob" in the UK version, while in the Portugal version, Duarte flutters his tongue.
    • For the last sound, Kevin makes a gargling sound, while Duarte goes "La la la la."
  • The episode's title, "What's That Sound?", will later be asked by Dora and Boots in the episode of Dora the Explorer: "Hic-Boom-Ohhh!" during the travel song. Dora the Explorer aired on Nickelodeon after this episode aired.


  • During the first airing of this episode. When Steve was drawing the third clue, his hands and the notebook were in front of the wrong backdrop (the yellow and white checkered kitchen floor instead of the wooden floor when he and Blue were adding sounds to the silent movie). However, this was fixed in later airings, but it was kept in the UK and Portugal versions.
  • Blue runs in a backward circle during the Mailtime segment.
  • When Steve and Blue go out to the patio to see the rain, a Boom mic can be seen on top of the screen.
  • In Pistas da Blue's version, when Duarte yells GEEMO, he doesn't know which way Blue went. He went to the right. You can't even see Blue when he says GEEMO.
  • When Mrs. Pepper says "Steve, we cannot hear a thing!" her mouth briefly doesn't move.
  • Steve identifies Sidetable Drawer's sound as "the sound of you opening the drawer." He should have said "the sound of you opening yourself," since she is supposed to be herself, not just the drawer.
  • When Steve imitates the crying baby, he makes the sound of a one-note trombone.
  • When Steve imitates the giggling baby, he giggles normally.
Blue's Clues Season 3
Blue's Big Treasure Hunt | Art Appreciation | Weight and Balance | What's That Sound? | Animal Behavior! | Blue's Big Pajama Party | Draw Along with Blue | Hide and Seek | Thankful | Blue's Big Holiday | Pool Party | Anatomy | Signs | Nature | Geography | Occupations | Blue's Big Mystery | Periwinkle Misses His Friend | Blue's Big Musical | What's So Funny? | Blue's Big Costume Party | Inventions | Blue's Play | Prehistoric Blue | The Wrong Shirt | Words | Shy | Magenta Gets Glasses | Environments | Stormy Weather | Blue's Collection | Café Blue