INTERVIEW - Alan Shapiro and Mark Bracco - Billboard Music Awards 2014 - Rehearsals Day 1

The video highlights several first-time performances, including collaborations between Iggy Azalea and Ariana Grande, and Pitbull with Jennifer Lopez. It also features new duets by Carrie Underwood and Miranda Lambert, a unique act by Miley Cyrus, and the TV debut of Katy Perry's 'Birthday'. Robin Thicke presents an emotional new song. The video concludes with a groundbreaking Michael Jackson experience using advanced technology, showcasing a new track recorded before his passing.

Which artists are performing together for the first time according to the transcript?

• Iggy Azalea and Ariana Grande

• Pitbull and Miley Cyrus

• Jennifer Lopez and Katy Perry

• Carrie Underwood and Robin Thicke

What is unique about Miley Cyrus's performance as mentioned in the transcript?

• It's a duet with Jennifer Lopez

• It's a cover of a Michael Jackson song

• It's a new FIFA World Cup anthem

• It's something unique that will be talked about

What is notable about Robin Thicke's upcoming performance?

• It's a collaboration with Katy Perry

• It's a tribute to Michael Jackson

• It's an emotional new song

• It's a dance performance

What technology is highlighted in the Michael Jackson experience?

• Virtual Reality

• Holographic technology

• Augmented Reality

• 3D Animation

Who collaborated with Michael Jackson on the new track mentioned in the transcript?

• Robin Thicke

• L.A. Reid

• Ariana Grande

• Pitbull