On the 50th anniversary of his Pre-Grammy Gala, Clive Davis picks five of his favorite all-star duets: Aretha and Alicia, Whitney and Natalie, more!

Before Sunday's Grammy Awards, we look back at the most memorable performances from music's biggest night, including Ricky Martin and Tina Turner.

Some incredibly talented performers were nominated for the four acting categories at the Oscars, but these 10 performances ...