For baby boomers who grew up with country radio, some love songs were impossible to sing alone. One voice pleaded, the other answered.

You've most likely heard these songs many times in the 70s and in the decades since then. But can you remember who actually sang them?

Before the hit records and sold-out concerts, some of music's greatest voices were barely noticed, spending years singing backup vocals for other artists.

Which is more legendary: Mariah Carey's voice or her ability to shade her rivals? As the top selling female artist of all time and one of the snarkiest entertainers in the world, Carey's persona lands somewhere between diva and troll. However, with the hotly anticipated release of her memoir, Carey is finally pulling back the curtain and revealing her true life story, and it's much more tragic than everyone expected.

Hollywood has a long history of making actors look like incredible singers while someone else supplies the vocals. But not every unforgettable musical performance involved a secret voice double. Some of cinema's biggest stars actually stepped up to the microphone themselves, occasionally surprising even the filmmakers. From classic Hollywood legends to modern Oscar winners, these actors proved their singing talents were very real.

Discover the shocking behind-the-scenes feuds between beloved classic TV costars, from The Golden Girls to Star Trek, whose onscreen friendships concealed bitter rivalries, explosive arguments, and decades of personal tension.