Hard drives containing Beyoncé’s unreleased music and several other items were stolen from a car that had been rented by her choreographer during a Cowboy Carter tour stop in Atlanta last week, according to police.

Jay-Z surprised fans once again during Night 3 of Beyoncé's "Cowboy Carter" tour in Atlanta, joining her on stage for a special performance.

A suspect stole "water marked music, some unreleased music, footage plans for the show and past and future set lists," according to an Atlanta Police incident report.

Beyoncé added a mechanical gold horse to her Cowboy Carter Tour set during the emotional performance of her country ballad "16 CARRIAGES" at her Atlanta tour stop on July 10. The horse replaced the suspended red convertible the singer usually rides during the performance of the song.

After first making an appearance at one of Beyoncé’s Paris shows, Hov made his second Cowboy Carter Tour appearance in Atlanta on Sunday (July 13), where he joined his wife for their smash duet “Crazy In Love,” before performing "Public Service Announcement" from his 2003 studio album The Black Album. See footage below.

Beyoncé is headed to her Atlanta for the next "Cowboy Carter" tour-stop. Here's what fans should know before getting to Mercedes-Benz Stadium.