Prince, In Memoriam

British national newspapers' front pages leading with the story about the death of U.S. musician Prince are displayed, April 22, 2016.

A sign above the Mayor Clinic in Minneapolis, April 22, 2016, asks people to wear purple in memory of the pop super star Prince who died Thursday at the age of 57.

Flowers lay on a T-shirt signed by fans of singer Prince at a makeshift memorial place created outside Apollo Theatre in New York, April 22, 2016.

Visitors look at a 1993 photograph of musician Prince by Lynn Goldsmith at the Smithsonian’s National Portrait Gallery in Washington, D.C.,  April 22, 2016. . The Smithsonian’s National Portrait Gallery is recognizing the life and accomplishments of Prince with the photograph by Goldsmith. It will be installed in the museum’s In Memoriam space.

Lorraine Womble wipes her eye at a vigil to celebrate the life and music of deceased musician Prince in Los Angeles, California, April 21, 2016.

NASA tweeted out a photo of a purple nebula, in honor of Prince, April 21, 2016. The image shows a composite view of the Crab nebula, an iconic supernova remnant in our Milky Way galaxy, as seen by the Herschel space observatory and the Hubble space telescope.

Julya Baer, 30, (R) cries at a vigil to celebrate the life and music of deceased musician Prince in Los Angeles, California, April 21, 2016.

Pedestrians pass New York's Apollo Theater where the marquee displays a message about Prince's death, April 21, 2016.

Donnie Straub of Minneapolis touches a star bearing U.S. music superstar Prince's name on an exterior wall of First Avenue, the nightclub where Prince got his start in Minneapolis, Minnesota, April 21, 2016.

A couple watches on as fans gather at Harlem's Apollo Theater to celebrate the life of deceased musician Prince in the Manhattan borough of New York, April 21, 2016.

The Texas Rangers play the Houston Astros as the Rangers broadcast a symbol on the large video screen over the right field roof honoring singer Prince during a baseball game in Arlington, Texas, April 21, 2016.

The Mercedes-Benz Superdome in New Orleans is lit up in the color purple to honor pop legend Prince, April 21, 2016.

Director Spike Lee dances at a street party he hosted called "PRINCE We Love You Shockadelica Joint" to celebrate the life and music of deceased musician Prince in the Brooklyn borough of New York, April 21, 2016.

Prince's star adorns the wall at First Avenue as a memorial grew on April 21, 2016, in Minneapolis, where the pop super star Prince often performed.

The Victoria Arts Centre is flooded with purple light in tribute to late U.S. music icon Prince in Melbourne, Australia, April 22, 2016.