Judging by the popularity of a show like American Idol (particularly the awful auditions), people love to hear a lovely voice (or a terrible one). Here are the best-sounding vocal chords.

A Lgebra

(Parody of "Acapella" by Karmin)

Leslie and John Fredrickson, featuring Justin Yoon

Problems

(Parody of "I Knew You Were Trouble" by Taylor Swift)

Megan Vennell, Abby Lewis, and Ally Damrau, featuring Malana Wilson

Quadratics Music Video

(Parody of "Partition" by Beyonce NSFW)

Halie Arreaga and Jade Mongo

Use Those Formulas

(Parody of "All About That Bass" by Meghan Trainor)

Catie Stewart and Courtney Musia, featuring Ainsley Wood