Karl Koch

Karl Michael Koch (September 15, 1969) is a general assistant to American rock band Weezer and "unofficial fifth member" of the ensemble.

Since the band's inception he has assumed multiple different roles, including roadie, concert photographer, webmaster, social media manager, archivist, historian, and art director. Drummer Patrick Wilson said in 2005, "[the band] wouldn't be here if it wasn't for Karl."

Koch established and operates Weezer's official website and social media pages, on which he publishes his band news column Karl's Corner. The band's early adoption of the internet, spearheaded by Koch, is cited as a reason for their return to popularity after the hiatus that followed Pinkerton. Some footage taped and archived by Koch from this era would later appear on the Weezer DVD Video Capture Device.

1992–1999: The "Blue Album" and Pinkerton After Weezer's proper formation in February 1992, Koch remained a consistent crew member and assistant. After the band was signed to Geffen Records in 1993, Koch accompanied the band to New York for the recording of the Blue Album, working per diem.

Early iterations of the Blue Album single "Undone – The Sweater Song" featured dense sound collages of popular audio, produced by Koch. To avoid licensing issues, these were replaced shortly before release with spoken word segments performed by Koch, Matt Sharp, and fan club co-founder Mykel Allen.

While conceiving Songs from the Black Hole (an ultimately unreleased rock opera which evolved into the 1996 album Pinkerton), Rivers Cuomo envisioned Koch performing the role of the sentient robot character "M1". Koch was among the few individuals who had access to the album's drafts before its songs and story were officially published, and acted as a primary source of information on the album for fans in the 2000s. On "Butterfly", the final track on Pinkerton, Koch's drumming accompanies Cuomo's acoustic performance.

Karl's Corner and website management

During 1995–1998, Koch wrote a column titled Karl's Corner for Weezine, the quarterly print zine issued by the band's official fan club. After the passing of fan club founders Mykel and Carli Allen, Koch became the lead editor and contributor to the zine. Brad Cawn of the Chicago Tribune cited Koch's management of the website and the Karl's Corner column as a contributing factor behind the band's resurgence in popularity in the early 2000s, overcoming a decline caused by the commercial underperformance of their 1996 album Pinkerton and the hiatus that followed.

2000–2009: Touring and music videos At the onset of the 2000s, Koch established a number of consistent roles within the band: photographing and summarizing Weezer performances on Karl's Corner (alongside other website maintenance), assisting with design work for merchandise and music releases, and giving general input on band decisions.

The band's DVD Video Capture Device: Treasures from the Vault 1991–2002, directed and edited by Koch, was released in 2004. It includes released and unreleased music videos (some directed by Koch) and miscellaneous footage shot by Koch over the years.

2010–present: Memories Tour, revival of fan club, and "VIP experience" Koch showcasing the stratocaster used by Rivers Cuomo during a "VIP Experience" before a concert in 2023. For Weezer's Memories Tour in 2010, Koch gave special presentations featuring band artifacts and insider information during mid-show intermissions. He also reprised his drumming on the Pinkerton song "Butterfly". As he had for the Blue Album, Koch wrote an in-depth essay on the development of Pinkerton for its deluxe edition release in the same year. This essay was included in the release's booklet.

For the band's 2018 tour with the Pixies, Koch hosted the "Karl's Corner VIP experience" for VIP ticket holders, wherein fans could meet Koch and view a small museum of unique Weezer merchandise and ephemera from his archive. The band offered the same experience during subsequent tours.

Other projects Karlophone In 1996, Koch formed the experimental sound collage project Karlophone. His music, inspired by contemporary hip hop and producers such as DJ Shadow, was constructed of layered audio samples from records, films, and reels in his large personal collection, with added instrumentation. He released his first album, Press Any Key to Begin, in fall 2002. Alex Steininger of In Music We Trust reviewed the album positively, describing it as "one part hip-hop, one part electronica, one part rock, and seven parts experimental wanderings."

Amid his work with Weezer between 2002 and 2006, Koch produced his second studio album I Must Find This Karlophone..., which he released in 2007. A third album began production immediately following the second's release, but has yet to be completed as of 2023.

In 2022, Koch co-hosted The Special Podness — a four episode podcast retrospective on The Special Goodness — with Wilson and former member Atom Willard. He attended Nichols School

Koch is the great-grandson of Ehrhardt Koch, founder of the New Era Cap Company, and brother of its current CEO Chris Koch. Koch is cited as a "New Era historian" in Jim Lilliefors' book Ball Cap Nation and portrayed his great-grandfather in a 2012 advertisement for the company. Both sides of his family are of German descent.

Works Discography As Karlophone 2001 – Press Any Key to Begin 2007 – I Must Find this Karlophone...

With Southern Fried Swing 2001 – Free Flight Thru the Universe of Sound

With Weezer/Rivers Cuomo (including non-musical contributions) 1994 – Weezer (Blue Album) (design) 1996 – Pinkerton (uncredited drumming on "Butterfly") 2001 – Christmas CD (photography, artwork) 2001 – Weezer (Green Album) (photography) 2002 – The Lion and the Witch (photography) 2002 – Maladroit (photography) 2005 – Make Believe (photography) 2007 – Alone: The Home Recordings of Rivers Cuomo (photography) 2008 – Weezer (Red Album) (photography) 2008 – Alone II: The Home Recordings of Rivers Cuomo (design) 2010 – Death to False Metal (photography) 2026 – Weezer (Gold Album) (cowrote track "The Show Must Go On") Following the Blue Album, Koch is credited on every Weezer album (and the SZNZ EPs) under nonsense titles (e.g., "Boot Knocka" on the Green Album), alongside any other visual or technical role.

Filmography Weezer – Video Capture Device: Treasures from the Vault 1991–2002 (2004)

Books Raditude (2009) – not to be confused with the album of the same name Weezine Omnibus (2014) Weezine Omnibus: Deluxe Edition (2016) Tales of Weezer (2021)