Hold the phone.
2 seconds sound clip from Darkwing Duck - Darkly Dawns the Duck: Part 2 (S01E01).
You can hear this line at 00:06:50.510 in the DVD version of the TV Series.
Quote context
[...]
- I'll be near to chase away fear, so sleep now and dream till tomorrow. (2)
- Huh? What is... What you got? Oh! This kid could wake Elvis.
- Yellow, blue, red, blue, purple too?
- Yellow, blue, red, blue... The lyrics match the controls of the Ramrod.
- Lightning? Without thunder? Hmm. The pattern's too regular for lightning.
- Excellent. A half-hour of this should be sufficient.
[...]