Streisand penned this track with Paul Williams, but famously performed a duet of it with Kris Kristofferson, her co-star.

Carin León and Kacey Musgraves team up on "Lost in Translation," a bilingual love song blending country, ranchera, and norteño.

The best love songs aren't necessarily limited to straightforward romantic proclamations, but also include messages of devotion, forgiveness, lust, kindness and friendship.

Lionel Richie and Diana Ross have the most enduring love song of all time. The Motown icons’ 1981 ballad, “Endless Love,” ranks as No. 1 on Billboard’s list of Top 50 Hot 10… ...

Duet Type: Endless Love Why It Works: There are two types of karaoke singers – people who know every word to this song and people who wouldn’t touch it with a 10-foot pole.

American Idol 5th Judge: Duets Put Real-Life Couples to the Test -- Plus, Idol's First Gay Love Song ...

Few know Prince’s Purple Rain was nearly a country duet with Stevie Nicks, but her surprising refusal made this song a solo.

It's not yet known what exactly this tribute will entail, or if Madonna will perform "Love Song," her 1989 duet with Prince, off her album, Like a Prayer.

Tim McGraw and Faith Hill aren't just one of country music's longest-lasting couples, they're also one of the genre's most successful duet pairings.