"I Will Always Love You"
Artist: Whitney Houston
Heartbreaking line: "Bittersweet memories/that is all I'm taking with me. So, goodbye. Please, don't cry. We both know I'm not what you, you need."
Why we weep: Houston takes Dolly Parton's 1974 hit to the next level with incredibly high and powerful notes. The diva's vocal range alone is enough to bring us to tears, never mind the moving lyrics that accompany it.