Rock Star is a 2001 American musical comedy-drama film directed by Stephen Herek and starring Mark Wahlberg and Jennifer Aniston.
 It tells the story of Chris "Izzy" Cole, a tribute band singer whose ascendance to the position of lead vocalist of his favorite band was inspired by the real-life story of Tim "Ripper" Owens, singer in a Judas Priest tribute band who was chosen to replace singer Rob Halford when he left the band.
Eddie Vedder (born Edward Louis Severson; December 23, 1964) is an American musician, singer and songwriter best known as a member of the rock band Pearl Jam, with whom he performs lead vocals and is one of three guitarists.
 He is known for his powerful baritone vocals.
 He also appeared as a guest vocalist in Temple of the Dog, the one-off tribute band dedicated to the late singer Andrew Wood.
A tribute act, tribute band or tribute group is a music group, singer, or musician who specifically plays the music of a well-known music act.
 Tribute acts include individual performers who mimic the songs and style of an artist, such as Elvis impersonators covering the works of Elvis Presley or groups like The Iron Maidens, an all-female band that pays tribute to Iron Maiden.
Georg Neuhauser (born February 22, 1982) is an Austrian metal vocalist, best known as the lead vocalist and songwriter for the Austrian symphonic power metal band Serenity.
 He helped create the stable line up of Serenity in 2004, and has releases 4 full-length albums and 1 demo with the band.
 He has also appeared as guest vocalist on several albums, including Score to a New Beginning by Fairyland and The Human Contradiction by Delain.
Temple of the Dog was an American rock band that formed in Seattle, Washington in 1990.
 It was conceived by vocalist Chris Cornell of Soundgarden as a tribute to his friend, the late Andrew Wood, lead singer of the bands Malfunkshun and Mother Love Bone.
 The line-up included Stone Gossard on rhythm guitar, Jeff Ament on bass guitar (both ex-members of Mother Love Bone), Mike McCready on lead guitar, and Matt Cameron on drums.
 Eddie Vedder appeared as a guest to provide some lead and backing vocals.
Melanie Sisneros is an American bassist and a member of four bands: Crescent Shield, Whole Lotta Rosies (an all-female AC/DC tribute band), Hangar 18 (a Megadeth tribute band) and Mz Led (an all-female Led Zeppelin tribute band).
 She is also a former member of the bands Sinergy, The Iron Maidens and New Eden.
Chris Cornell (born Christopher John Boyle; July 20, 1964 – May 18, 2017) was an American musician, singer, and songwriter.
 He was best known as the lead vocalist for the rock bands Soundgarden and Audioslave.
 Cornell was also known for his numerous solo works and soundtrack contributions since 1991, and as the founder and frontman for Temple of the Dog, the one-off tribute band dedicated to his late friend Andrew Wood.
"Man of the Hour" is a song by the American rock band Pearl Jam.
 Written by vocalist Eddie Vedder, "Man of the Hour" accompanies the closing credits of the 2003 film "Big Fish", and is the first track on the film's soundtrack album.
 It was released as a single on November 26, 2003.
 The song was included on Pearl Jam's 2004 greatest hits album, "rearviewmirror (Greatest Hits 1991–2003)".
Hater was an American rock band that formed in Seattle, Washington in 1993.
 The band formed as a side project mostly under the direction of Soundgarden bassist Ben Shepherd.
 Additional members included Soundgarden drummer Matt Cameron, guitarist John McBain (ex-Monster Magnet and, later, partner of Cameron and Shepherd in Wellwater Conspiracy), bassist John Waterman for the self-titled album, Devilhead vocalist Brian Wood, brother of Mother Love Bone vocalist Andrew Wood, and Alan Davis on bass for "The 2nd".
Oliver Hartmann (born June 28, 1970 in Rüsselsheim) is a German metal vocalist, guitarist, songwriter, and producer who performed in various acts, either as guitarist, solo or choir singer.
 He is best known for his role as vocalist and one of the founders of the band At Vance, his own band Hartmann and his guest appearances on albums of several prominent metal bands, including Freedom Call, Edguy, Rhapsody, Genius rock opera, Iron Mask, Aina's metal opera "Days of Rising Doom" and the metal opera Avantasia where he participated as a vocalist in 4 albums and also as a guitarist of the live and studio line up.
 He is also guitarist and vocalist with the Pink-Floyd tribute band Echoes.

Question: The musician who wrote "Man of the Hour" also appeared as a guest vocalist in what Andrew Wood tribute band?
Answer: Temple of the Dog