Question: What type of group does Bob Mould and Filter have in common?
Context: Alicia J. Rose is a photographer, director, producer and musician based in Portland, Oregon.  Her photography has been featured in Playboy, Rolling Stone, XLR8R, V, Elle, Spin, Sunset, Filter, Fader, Portland Monthly, the NY Times, Wall Street Journal, Sunset and many others.  A photograph she took of chef Naomi Pomeroy, of the Portland restaurant Beast, holding a dead pig, received significant attention and was honored with a 2008 PDN Photo Annual Award and a multiple page spread in "Elle" Magazine.  Rose has also directed music videos for Cake, Corin Tucker, Bob Mould, Menomena, AgesandAges and others.  She completed her narrative short film debut "The Gift of Gravity" in 2014, and created the comedic web series "The Benefits of Gusbandry". Silver Age is the tenth solo album from former Hüsker Dü and Sugar frontman Bob Mould.  Mould was joined on bass by Jason Narducy and on drums by Superchunk's Jon Wurster. Bob Mould (sometimes referred to as Hubcap) is the third solo album by former Hüsker Dü and Sugar guitarist and singer Bob Mould.  It was recorded and mixed between September & November 1995 and released in April 1996.  Mould played all of the instruments on the album himself, and the sleeve notes declare, "This one is for me."  In the place of traditional band credits, the sleeve states, "Bob Mould is Bob Mould." Robert Arthur Mould (born October 16, 1960) is an American musician, principally known for his work as guitarist, vocalist and songwriter for alternative rock bands Hüsker Dü in the 1980s and Sugar in the 1990s. Hüsker Dü was an American rock band formed in Saint Paul, Minnesota, in 1979.  The band's continual members were guitarist/vocalist Bob Mould, bassist Greg Norton, and drummer/vocalist Grant Hart.  Hüsker Dü first gained notability as a hardcore punk band, later crossing over into alternative rock.  Mould and Hart were the principal songwriters for Hüsker Dü, with Hart's higher-pitched vocals and Mould's baritone taking the lead in alternating songs. Warehouse: Songs and Stories (1987) is the sixth and final studio album by alternative rock band Hüsker Dü, originally released by Warner Bros.  Records as a double album on two vinyl LPs.  The band dissolved following the tour in support of its release, in part due to disagreements between songwriters Bob Mould and Grant Hart over the latter's drug use.  This album, along with "Candy Apple Grey", showcases the increasing maturity of Mould and Hart's writing—a change which alienated some long-time fans.  This album is also known for its battle between the two songwriters, with Mould famously telling Hart that he would never have more than half of the songs on a Hüsker Dü album. Filter is an American industrial rock group formed in 1993 in Cleveland by singer Richard Patrick and guitarist/programmer Brian Liesegang.  The band was formed after Patrick desired to start his own band after leaving Nine Inch Nails as their touring guitarist.  Their debut album, "Short Bus", was released in 1995, and ended up going platinum, selling over one million copies, largely due to the success of the band's single "Hey Man Nice Shot."  After the album, the band would go through the first of many line-up changes, leaving Patrick as the only consistent member across all music releases. Copper Blue is the debut studio album by American alternative rock band Sugar.  It was voted 1992 Album of the Year by the NME.  All of the songs were written by guitarist/vocalist Bob Mould, who also co-produced with Lou Giordano.  The song "The Slim" is about losing someone to AIDS.  Musically, the band continues the thick punk guitar of Mould's previous band, Hüsker Dü, while slowing the tempo and emphasizing melody even more. Poison Years is a compilation album by Bob Mould, who had been the guitarist and co-vocalist of the influential American rock band Hüsker Dü.  It is essentially a condensed version of Mould's first two solo albums on Virgin Records, "Workbook" (1989) and "Black Sheets of Rain" (1990), and was released in mid-1994 after Mould had achieved considerable success with his new band Sugar.  It contains 6 (out of 11) studio tracks from "Black Sheets" and 5 (out of 11) tracks from "Workbook", of which 3 are previously unreleased live versions.  In addition, the album contains a studio outtake from the "Workbook" period, "All Those People Know", a live version of another non-album track, "If You're True", and a live cover version of "Shoot Out The Lights" from the eponymous 1982 album by Richard and Linda Thompson. Circle of Friends is a DVD by Bob Mould of a live concert recorded in 2005 at the in Washington, D.C.  The performance included songs from Mould's earlier bands Hüsker Dü and Sugar, as well as his solo work.  This particular show was part of the "Body of Song" tour, Mould's first non-solo tour for over a decade and the first one in which Hüsker Dü material was played in a band format since the band broke up in 1988.
Answer: band