Barbra Streisand's 2016 album, ENCORE: Movie Partners Sing Broadway, saw the superstar singing alongside celebrity duet partners, including Alec Baldwin, Chris Pine and Hugh Jackman. But it was hardly the first time Streisand shared the mic.

Below, we're share our 7 favorite Barbra duets.

"Ding Dong, The Witch Is Done"

One of Barbra's first duets was with Harold Arlen, a great American composer and the man who gave us the songs from The Wizard of Oz . We never would have though of Barbra in Oz, but there you go!

"You're The Top"

Okay, so Ryan O'Neal isn't a world-class singer. But What's Up Doc is a great movie and these kids obviously have chemistry.

"Guilty"

Barbra and Barry Gibb's love song from 1980 won the Grammy for Best Pop Duo. To this day, it makes us think of sipping margaritas in a Jacuzzi with someone else's husband.

"Tell Him"

Barbra and Celine Dion are magic and fire. The story is they were going to sing it together on the Grammys but Barbra fell ill and so Celine had to sing Titanic's "My Heart Will Go On." Ah what could have been.

"You Don't Bring Me Flowers"

Barbra and Neil Diamond. A match made in Jewish heaven.

"How Deep is the Ocean"

Mother and son. Beautiful.

"Close to You"

This song is so closely associated with Karen Carpenter, but it takes on a whole new life in Barbra's hands. (And she's surprisingly flirty with Burt Bacharach!)

"Make No Mistake He's Mine"

Barbra and Kim Carnes—So unexpected LOVE.

"No More Tears (Enough Is Enough)"

Barbra and Donna Summer doing a disco number that's ALSO an anthem about self-respect? Perfection.

"Get Happy/Happy Days Are Here Again"

Was there any doubt?

h/t: Seth and Ricky