"I'll Show You" is a song recorded by Canadian singer Justin Bieber for his fourth studio album Purpose (2015). Written by Bieber, Josh Gudwin, Sonny Moore, Michael Tucker and Theron Feemster, the song was produced by Skrillex and Blood. It was released as a promotional single from the album on November 1, 2015 by Def Jam. A mid-tempo EDM ballad, the song includes trap percussion and synthesizer beds as its main instrumentation. Bieber's vocals on the track were considered emotional, lower and calmer. Lyrically, "I'll Show You" was considered an autobiographical song about his public image, with lyrics about the pressure of fame and the need for human connection.

The song received positive reviews from most music critics, who praised Skrillex's production and his chemistry with Bieber, while also noting his raweness and praising his vocals on the track. Commercially, the song was successful, reaching the top-ten in seven countries, including his native country, Canada, while being top-twenty in other six, including Australia, the United Kingdom and the United States, where it received a platinum certification by the Recording Industry Association of America for selling over a million copies. The song's music video was released on November 2, 2015, was shot in South Iceland, and it shows Bieber on lush mountainsides, gazing at nature from a cliff's edge and skateboarding on top of a broken-down airplane. "I'll Show You" was included on his Purpose World Tour.

While working on his then-upcoming studio album, Justin Bieber enlisted American DJ Skrillex to produce songs for the record after successfully working with him on "Where Are Ü Now", which was a song that he sent to Skrillex and Diplo for their project Jack Ü and that became a worldwide hit and helped to revemp his career. Regarding his will to work with the producer, Bieber commented: "Skrillex is a genius. He’s super futuristic and I just love his sounds. I think being able to incorporate that sound with what I’m doing has been super cool because it’s like new and fresh, and I feel like no one’s done it before." Skrillex, on other hand, commented about his involvement on the album, saying: "I heard some well-written songs that were really good that they wanted me to do production on and from there, we wrote some new songs. It was an opportunity to try some stuff that I had never done before and we ended up making something really unique." Skrillex also invited Michael Tucker, under his producer name Blood, to help him produce some tracks for the album, with one of them being "I'll Show You". Regarding the song, Skrillex commented: "There was a very different version of that track, and after I heard it I wanted to re-produce it so it was more slowed down and emotional. That track is one of my favourites on the album. It has some of the best lyrics on the album. That was one of the songs that he [Bieber] really liked, and we were both proud of." It was later released as a promotional single from the album on November 1, 2015.

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