Chris Cornell (born Christopher John Boyle on July 20, 1964 – May 18, 2017) was an American rock musician best known as the lead singer and songwriter for the rock bands Soundgarden and Audioslave, and for his numerous solo works and soundtrack contributions. He was known for his wide four octave vocal range, and powerful vocal belting technique. He was the founder and frontman for Temple of the Dog, the one-off tribute band dedicated to his former roommate, Andrew Wood. He released four solo studio albums, Euphoria Morning (1999), Carry On (2007), Scream (2009) and Higher Truth (2015). He was also a close friend of Chester Bennington (who was godfather of Cornell's son Christoper Jr.) and occasional associate of Linkin Park live concerts.

In 2008, Cornell was featured on the Main Stage of Linkin Park's Projekt Revolution tour. Joining Linkin Park and Cornell on the Main Stage were Busta Rhymes, The Bravery, and Ashes Divide. The Revolution Stage featured Atreyu, 10 Years, Hawthorne Heights, Armor for Sleep, and Street Drum Corps. During this tour, Cornell has stated that he plans to "jump on stage" with other artists as the opportunity arises; this may set the stage for future Cornell collaborations, outside of his work with Timbaland. Throughout the tour, Cornell collaborated with Chester Bennington from ppLinkin Park]] while performing "Hunger Strike", and with Street Drum Corps for a number of his Soundgarden tracks. While Linkin Park would perform their Grammy-winning song "Crawling", he would appear on stage singing the second verse of the song, the outro, and harmonies Aaron Lewis provided for the Reanimation version.

On May 18 2017 Chris Cornell was found dead in his hotel room in Detroit shortly after performing at a Soundgarden concert. The cause of death was determined to be suicide by hanging. At Cornell's funeral Chester Bennington performed Leonard Cohen's "Hallelujah". On July 20 (the day that would have been Cornell's 53rd birthday) Bennington also committed suicide by hanging.