Context_1 : The Demi World Tour was the fourth headlining concert tour by American singer Demi Lovato. It was Lovato's second tour in support of her fourth studio album "Demi" (2013), following The Neon Lights Tour. During most of the European tour dates in 2014 (except for Istanbul), Lovato was the opening act for Enrique Iglesias' Sex and Love Tour. The tour was produced and promoted by Live Nation, and sponsored by the Tampax and Always Radiant Collection. The first leg of the tour took place in the United States and Canada from September 6, 2014 to October 27, 2014, where Christina Perri and MKTO served as opening acts. Lovato toured Oceania and Asia in early 2015. Context_2 : "Tina in the Sky with Diamonds" is the second episode of the fifth season of the American musical television series "Glee", and the ninetieth episode overall. The episode was written and directed by series co-creator Ian Brennan and first aired on October 3, 2013 on Fox in the United States. The episode is the second of two tribute episodes to the Beatles. It features the prom, Tina Cohen-Chang (Jenna Ushkowitz) runs for prom queen, the crush of Sam Evans (Chord Overstreet) on new school nurse (Phoebe Strole), the new romance between Santana Lopez (Naya Rivera) and Dani (Demi Lovato), and a surprising news for Rachel Berry (Lea Michele) about "Funny Girl". Special guest star Demi Lovato makes her first appearance as Dani, a struggling artist in New York City, and Peter Facinelli returns as Rupert Campion, the "Funny Girl" director. Context_3 : We the Kings is an American rock band from Bradenton, Florida. The band's self-titled full-length debut album, released in 2007, included the platinum single "Check Yes Juliet", and went on to sell over 250,000 copies in the US. The group's second album "Smile Kid" (2009) included Top 40 singles "Heaven Can Wait" and "We'll Be a Dream" (featuring Demi Lovato), as well as the single "She Takes Me High". Context_4 : American singer Demi Lovato has embarked six concert tours and performed live at various award ceremonies and television shows. Her debut promotional tour in 2008, Demi Live! Warm Up Tour was based in North America only and supported her debut studio album, "Don't Forget" (2008). At the same year, Lovato served as one of the opening acts for Jonas Brothers on their fifth concert tour, Burnin' Up Tour. Lovato also served as one of the opening acts for Avril Lavigne on her third concert tour, The Best Damn World Tour on selected dates in North America. In 2009, Lovato performed as the opening act on the Jonas Brothers World Tour 2009 with Jonas Brothers during the South American and European legs, before she continued to tour her first headlining tour, during Summer 2009, promoting her debut album "Don't Forget" and her sophomore album "Here We Go Again". The tour featured opening acts, David Archuleta, Jordan Pruitt and KSM. In 2010, Lovato performed as the opening act on Jonas Brothers' Live in Concert World Tour 2010. On November 1, 2010, Lovato left the tour after a dispute arose to the public light involving her apparently punching one of the dancers of the tour. After Lovato left, she was interned in a treatment center to seek out help. Context_5 : Demetria Devonne Lovato, known professionally as Demi Lovato ( or ; born August 20, 1992), is an American singer, songwriter, and actress. After making her debut as a child actress in "Barney & Friends", Lovato rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock" and released her debut single "This Is Me" which peaked at number nine on the "Billboard" Hot 100. The success of the film and its soundtrack resulted in a recording contract with Hollywood Records. Her debut album, "Don't Forget" (2008), debuted at number two on the US "Billboard" 200. The following year, Lovato was cast as the titular character of the television series "Sonny with a Chance" and she released her sophomore album, "Here We Go Again", which became her first one to top the "Billboard" 200 chart. Context_6 : Somebody to You is the debut extended play (EP) by British pop rock band The Vamps. It was released on 4 August 2014 for promotion in the United States after their success internationally in two formats with slightly destined for the American market with the title song "Somebody to You" featuring Demi Lovato to be their debut single in the States. Context_7 : "Instruction" is a song by English DJ and record producer Jax Jones, featuring American singer Demi Lovato and British rapper Stefflon Don. It was written by MNEK, Stefflon Don, Demi Lovato and Jax Jones, with the song's production handled by Jax Jones and Mark Ralph. It was released on 16 June 2017, through Polydor Records. "Instruction" is included on the deluxe edition of Lovato's sixth studio album, "Tell Me You Love Me". Context_8 : Demi (stylized as DEMI) is the fourth studio album by American singer Demi Lovato. It was released on May 10, 2013, by Hollywood Records. Looking to transition from her self-described "generic" third album "Unbroken" (2011), Lovato wanted to make her fourth album to "have songs that excited her". The album incorporates pop with elements of synthpop, and bubblegum pop. The album was recorded between 2012 and 2013, when Lovato served as a judge on the second season from the American version of "The X Factor". Context_9 : "Neon Lights" is a song by American singer Demi Lovato from her fourth studio album, "Demi" (2013). The song was released as the album's third single on November 19, 2013. Ryan Tedder and Noel Zancanella produced and co-wrote the song along with Lovato, Mario Marchetti and Tiffany Vartanyan. On September 29, 2013, Lovato announced the name of her concert tour, the Neon Lights Tour, and soon after that "Neon Lights" would become the third single from the album. The song, with its prominent EDM influences, covered new ground for Demi, who had been previously known for her pop ballad singles. Its accompanying music video was released on November 21, 2013. Context_10 : The Worst Kept Secret Tour is the second official tour from American girl-group Fifth Harmony and the third overall. The tour began in Ventura, California on February 2, 2014 and ended on March 24, 2014 in Buffalo, New York. The group performed in this tour around the same time when they were opening acts for Demi Lovato's 'Neon Lights Tour'. The official poster for this tour was chosen by Fifth Harmony among many nominations submitted by fans. The tour was planned as an early tour for fans who were going to see the group in Demi Lovato's 'Neon Light's Tour'. fact_1 : Somebody to You is the debut extended play (EP) by British pop rock band The Vamps. fact_2 :  After making her debut as a child actress in "Barney & Friends", Lovato rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock" and released her debut single "This Is Me" which peaked at number nine on the "Billboard" Hot 100. Answer: The Vamps
Output: Somebody to You featuring Demi Lovato was sung by what band?