Question: Both Chester Bennington and Nick Hexum, vocalist of 311, have played in what type of band?
Context: "Freak Out" is a single released by 311.  It was on the album "Music".  This studio single was released in 1992, prior to the release of "Music".  All three songs appearing on this single have co-written lyrics by Douglas Vincent "SA" Martinez and Nick Hexum.  The music for "Freak Out" was co-written by Chad Sexton and Nick Hexum. Nicholas Lofton "Nick" Hexum (born April 12, 1970) is an American singer, songwriter and rapper, currently the vocalist and guitarist for the multi-platinum alternative rock band 311 and The Nick Hexum Quintet. "I'll Be Here Awhile" is a single by alternative rock band 311.  It is the 12th and closing track on their album "From Chaos".  Lead singer Nick Hexum originally wrote it when he was twenty, hence the line in the refrain "Twenty years of age, " though Hexum was thirty when he recorded it.  He comments on the interview included on the disc of "From Chaos" that he was living a wild and crazy life at that young age. Zack Hexum (born April 28, 1978) is a Los Angeles based singer-songwriter.  He is the younger brother of Nick Hexum, the vocalist for 311. "All Mixed Up" is a single released by 311.  It was on the album "311", also known as "The Blue Album".  This album was released in 1995 and later went triple platinum, selling over 3 million copies worldwide.  The song was co-written by Douglas Vincent "SA" Martinez and Nick Hexum.  The duo first started working on the song during the 311 tour supporting "Grassroots".  After the tour Martinez wrote the lyrics about feeling "confused and being unfaithful" and Hexum took the song's title from an early Elvis Presley interview in which Elvis claimed he was "all mixed up" over his new-found fame. Chester Charles Bennington (March 20, 1976 – July 20, 2017) was an American singer and songwriter.  He was the lead singer for the rock band Linkin Park and also served as the frontman for Dead by Sunrise and Stone Temple Pilots. The Hunting Party Tour was the eleventh concert tour by American alternative metal band Linkin Park.  It was launched in support of Linkin Park's sixth studio album, "The Hunting Party" (2014).  The tour was partially announced in May 2014 through a teaser released after the release of trailer of a co-headlined tour "Carnivores Tour" by Linkin Park and Thirty Seconds to Mars.  Later, the tour was officially announced on November 23 with a whole trailer in promotion.  Its first leg under the name "European Tour" began on May 30, 2014, in Lisboa, Portugal, and ended on June 14 in Castle Donington, England, where they played "Hybrid Theory" as a whole album.  The tour features special guests Of Mice & Men and Rise Against.  On January 15, 2015, the band begun the "world" tour for The Hunting Party with the first leg under "North American Tour".  During a show at Indianapolis, Chester Bennington injured his leg, which led to the cancellation of the tour "North American Tour".  The band continued the world tour on May 9, performing at the first edition of Rock In Rio in America.  It is the last full tour to feature Chester Bennington as vocalist before his death in 2017. 311 (pronounced "three-eleven") is an American rock band from Omaha, Nebraska.  The band was formed in 1988 by vocalist and guitarist Nick Hexum, lead guitarist Jim Watson (a member briefly, before being replaced by Tim Mahoney in 1991), bassist Aaron "P-Nut" Wills.  and drummer Chad Sexton.  In 1992, Doug "SA" Martinez joined to sing and provide turntables for 311's later albums, rounding out the current line-up.  The band's name originates from the police code for indecent exposure in Omaha, Nebraska, after the original guitarist for the band was arrested for streaking. "Amber" is the third single from the band 311's 2001 album "From Chaos".  Focusing more on their reggae roots, the song is about Nick Hexum's then fiancee and then Eden's Crush member Nicole Scherzinger.  Scherzinger appears briefly in the music video, playing in the ocean with Hexum.  Although it is not one of the highest charting singles (hitting number 13 on the Modern Rock chart), it ended up their longest lasting on the Alternative Rock chart and remains their most popular single to date.It is also their only single that received a certification by the RIAA, achieving Gold status.  It is considered to be the band's signature song along with "Down". High Rise is the first studio EP by American rock band Stone Temple Pilots, released on October 8, 2013 through Play Pen, LLC.  It is the first release by the band without former lead vocalist Scott Weiland, who was fired from the band in February 2013.  It instead features Chester Bennington of Linkin Park on lead vocals, and the band is credited on the EP as "Stone Temple Pilots with Chester Bennington".  However, this would prove to be the sole release to feature Bennington before his departure from the band in 2015 and death in 2017.
Answer: rock band