The infectious pop/R&B tune helped Mariah win several Grammy Awards, and remains her biggest selling single of her career so far. Revolving around a girl who's lost her love and desperately wants him to come back, the song, cowritten by Mariah, is from her album The Emancipation of Mimi. And, though technically it's a ballad, "WBT" makes a great warm-up or cool-down song for your workout playlist!

Sample lyrics:

"When you left I lost a part of me

It's still so hard to believe

Come back baby please 'cause

We belong together

Who else am I gonna lean on when times get rough

Who’s gonna talk to me on the phone Till the sun comes up

Who’s gonna take your place There ain’t nobody better

Oh baby baby We belong together."