Photos: Rock In Rio USA

John Legend performs at Rock in Rio in Las Vegas on Saturday.   (Luis Sinco / Los Angeles Times)

Members of John Legend’s band warm up before a performance at Rock in Rio in Las Vegas on Saturday.   (Luis Sinco / Los Angeles Times)

Festivities and performances near an end at Rock in Rio in Las Vegas on Saturday.   (Luis Sinco / Los Angeles Times)

Luke Steele fronts the Australian electronic music group Empire of the Sun at Rock in Rio in Las Vegas.

Luke Steele fronts the Australian electronic music group Empire of the Sun at Rock in Rio in Las Vegas.

A couple tie the knot and are serenaded by an Elvis impersonator as the sun sets at Rock in Rio.

A zip-liner glides over the crowd at Rock in Rio in Las Vegas.

A giant robot navigates through the City of Rock on the final day of Rock in Rio in Las Vegas.

Fans cheer a performance by Rapper Big Sean at Rock in Rio in Las Vegas.

Rapper Big Sean performs at Rock in Rio in Las Vegas.

A woman dances with a bull at Rock in Rio in Las Vegas.

A dance troup performs on the streets of the City of Rock at Rock in Rio in Las Vegas.

Mayer Hawthorne, right, performs at Rock in Rio in Las Vegas.

Mayer Hawthorne performs at Rock in Rio in Las Vegas.

LAS VEGAS, NEV. - MAY 16, 2015. Crowds trickle slowly into the City of Rock for the final day of Rock in Rio in Las Vegas on Saturday, May 16, 2015. (Luis Sinco/Los Angeles Times)   (Luis Sinco / Los Angeles Times)

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

Taylor Swift, along with Ed Sheeran and Beyonce, lead in nominations for the 2015 MTV Video Music Awards. Above is Swift’s performance at Rock in Rio in Las Vegas in May.

Pop superstar Taylor Swift performs at Rock in Rio in Las Vegas.

British singer/songwriter Ed Sheeran performs at Rock in Rio in Las Vegas.

British singer/songwriter Ed Sheeran performs at Rock in Rio in Las Vegas.

Music fans watch a performance by British singer/songwriter Ed Sheeran at Rock in Rio in Las Vegas.

British singer/songwriter Ed Sheeran performs at Rock in Rio in Las Vegas.

Music fans wait for British singer/songwriter Ed Sheeran to perform at Rock in Rio.

LaGrande Wheel lights up the night at Rock in Rio.

Music fans dance to Brazilian jazz on a side stage at Rock in Rio in Las Vegas on Friday, May 15, 2015.

British singer Charlotte Emma Aitchison, aka Charli XCX, performs at Rock in Rio in Las Vegas on Friday, May 15.

Zip-liners are silhoutted against the late afternoon sky at Rock in Rio in Las Vegas on Friday, May 15, 2015.

British singer Charlotte Emma Aitchison, aka Charli XCX, performs at Rock in Rio in Las Vegas on Friday, May 15.

British singer Charlotte Emma Aitchison, left, aka Charli XCX, performs at Rock in Rio in Las Vegas on Friday, May 15.

Charli XCX’s drummer, Deborah Knox-Hewson, performs at Rock in Rio in Las Vegas.

An all-woman band backs British singer Charlotte Emma Aitchison, aka Charli XCX, at Rock in Rio in Las Vegas on Friday, May 15.

A music fan takes pictures from the VIP section as the sun sets on Rock in Rio in Las Vegas on Friday, May 15.

Sydney Sierota fronts L.A.-based Echosmith, a band composed of her and three siblings, at Rock in Rio in Las Vegas on Friday, May 15, 2015.   (Luis Sinco / Los Angeles Times)

Sydney Sierota fronts L.A.-based Echosmith, a band composed of her and three siblings, at Rock in Rio in Las Vegas on Friday, May 15.   (Luis Sinco / Los Angeles Times)

Sydney Sierota fronts L.A.-based Echosmith, a band composed of her and three siblings, at Rock in Rio in Las Vegas on Friday, May 15.

Brazilian dancers get the crowd into a groove under cloudy skies at Rock in Rio in Las Vegas on Friday, May 15.

Singer Ivete Sangalo brings Brazilian heat to Rock in Rio in Las Vegas on Friday, May 15.

Singer Ivete Sangalo brings Brazilian heat to Rock in Rio in Las Vegas on Friday, May 15.

Brazilian dancers get the crowd into a groove under cloudy skies at Rock in Rio in Las Vegas on Friday, May 15.

Singer Ivete Sangalo brings Brazilian heat to Rock in Rio in Las Vegas on Friday, May 15.