Jennifer Lopez gave a show-stopping performance at the American Music Awards when she paid tribute to Celia Cruz, and we have exclusive, behind-the-scenes video of the strenuous rehearsals.
"I've worked with some amazing talent," said choreographer Liz Imperio. "I've worked with Madonna; I've worked with Gloria Estefan; I've worked with Cher ... Jennifer is a beast all unto herself."
J.Lo's beau, Casper Smart, acted as creative director, matching Jennifer's intensity in getting the performance just right.
"I'm really hands on today, because I need to make sure that the look of the show is presented on camera as it is on stage," he said.
NUVOtv covered J.Lo's rehearsal for the series A Step Away, which is executive produced by J.Lo.