In May 2015, following the death of Freddie Gray and the subsequent riots, Prince released a song, "Baltimore", in tribute to Gray and in support of the protesters in that city. He also held a tribute concert for Gray at his Paisley Park estate called "Dance Rally 4 Peace" in which he encouraged fans to wear the color gray in honor of Freddie Gray. On May 10, he performed a special concert at the Royal Farms Arena in Baltimore called "Rally 4 Peace," that featured a special appearance by Baltimore State's Attorney Marilyn Mosby, and one set performed by Prince alone at a keyboard.