Beyoncé, Jay Z, and Alicia Keys join Prince in Baltimore, visit Freddie Gray's family

Pop icon Prince held a “Rally 4 Peace” concert in Baltimore this weekend in remembrance of Freddie Gray.

Concertgoers were asked “to wear something gray,” in honor of the 25-year-old Baltimore man who died while in police custody.

“The system is broken,” Prince shouted to the crowd at the Royal Farms Area during his performance. “It’s up to you young folks to fix it.”

Live audio from the concert was streamed free via the digital live music service TIDAL.

Jay Z and Beyoncé were also reportedly in attendance at the concert and visited Gray’s family and took photos with Mike Brown’s mother.

Tina Knowles and Alicia Keys also posed for photos with Brown’s mother backstage.

Follow’s Entertainment Editor Chris Witherspoon on Twitter @WitherspoonC.