Demi Lovato performed at the Greek Theatre on July 18, 2012 in Los Angeles, California.
Adele belts it out at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England.
Singer and actress Miley Cyrus performed at City Of Hope on October 10, 2012 in Los Angeles, California.
Singer Katy Perry performed at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada.
Singer/songwriter Taylor Swift performed on ABC News' Good Morning America on October 23, 2012 in New York City.
Beyonce performed on stage at Ovation Hall at Revel Resort & Casino on May 26, 2012 in Atlantic City, New Jersey.
Kelly Clarkson performed at the 2012 MuchMusic Video Awards at MuchMusic HQ on June 17, 2012 in Toronto, Canada.
Actress and singer Selena Gomez performed at the HSBC Arena in Rio de Janiero, Brazil earlier this year.
Lady Gaga hits a high one as she sings during her concert in Milan, Italy on October 2, 2012.
JoJo performed at The Fulfillment Fund "Songs of Our Lives" Benefit Concert at The Geffen Playhouse in Los Angeles on May 23, 2012.
Rihanna gives it all she's got onstage during the 2012 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2012 in Las Vegas, Nevada.
Lana Del Rey performed on stage on the third day of the Eurockeennes' Festival on July 1, 2012.
Singer Carrie Underwood performed on NBC's "Today" at Rockefeller Plaza on August 15, 2012 in New York City.
Florence Welch of Florence and the Machine performed live on the main stage on Day Two of the Reading Festival 2012 on August 25, 2012 in Reading, England.
Jordin Sparks sings during the opening ceremony on Day One of the 2012 US Open at USTA Billie Jean King National Tennis Center on August 27, 2012 in NYC.
The "Call Me Maybe" singer, Carly Rae Jepsen performed at The Staples Center on October 2, 2012 in Los Angeles, California.
Nicki Minaj performed live on stage in London, England at the 02 Arena on October 30, 2012.
Jessie J hypes up the crowd at Wireless Festival, Hyde Park, London, England on July 8th, 2012.