- Carlos Ramon: Cornelia, if you're out there, will you help me make this thing sound right?
- [At that moment, a clap of thunder pierces the eerie silence]
- Arnold: Uh, Carlos, Miss Frizzle said if you kept asking questions, you'd keep getting answers. W-was that an answer?
- Carlos Ramon: [seeing a harp string vibrating which Dorothy Ann just plucked] Look at that string moving back and forth.
- Ms. Valerie Frizzle: That, class, is a vibration. You can feel it.
- Carlos Ramon: [gripping the vibrating harp string] Viiibraaatiiion.
- Keesha Franklin: Let's get the facts: when the string stopped vibrating, the *sound* stopped!
- Wanda Li: [on their way to the sound museum] So what if the sound of Carlos's instrument stays...
- [instrument sounds of rattles, grinds, and groans]
- Wanda Li: ...just like that?
- Dorothy Ann: Ooh, our concerto will be ruined. All the other schools will laugh at us, and it'll be the end of the world as we know it. Other than that, nothing.