Answer the question at the end by quoting:

Bush are an English rock band formed in London, England in 1992. Their current lineup consists of lead vocalist and rhythm guitarist Gavin Rossdale, drummer Robin Goodridge, lead guitarist Chris Traynor, and bassist Corey Britz. In 1994, Bush found immediate success with the release of their debut album, Sixteen Stone, which is certified 6x multi-platinum by the RIAA. They went on to become one of the most commercially successful rock bands of the 1990s, selling over 10 million records in the United States.
After leaving his band Midnight, Gavin Rossdale met former King Blank guitarist Nigel Pulsford in 1992. The two bonded over an appreciation of the American alternative rock group the Pixies. The two formed a new band which they called Future Primitive. Describing the early sound of the group, one British record label executive said years later, "They weren't what they are today - they were a little like the more commercial side of INXS". The pair then recruited bassist Dave Parsons and drummer Robin Goodridge to complete the line-up. The group soon chose the name "Bush", naming themselves after Shepherd's Bush, London, where the band members used to live. In 1993, the band was signed by Rob Kahane, who had a distribution deal with Disney's Hollywood Records. The band completed recording its debut album Sixteen Stone in early 1994. However, the death of Disney executive Frank G. Wells eliminated a supporter for Kahane, and executives at Hollywood deemed Bush's album unacceptable for release. As a result, the members of Bush took jobs performing menial labour. Interscope Records ultimately decided to release the album, and at the end of 1994, Kahane sent an advance copy of the album to a friend at influential Los Angeles radio station KROQ-FM, which added the song "Everything Zen" to its rotation. On the Billboard Music Charts (North America), Sixteen Stone peaked at No. 4 on the Heatseekers and Billboard 200 charts. The album spawned two Top 40 singles. After about six months of promotion for Sixteen Stone, the album began to sell well, once "Comedown" and "Glycerine" struck America. Additionally, "Little Things" and "Machinehead" both charted well in North America. In Canada, the band were initially forced to release Sixteen Stone under the name BushX, as the 1970s Canadian band Bush still held the rights to that name in the Canadian market. The dispute arose after the British band's lawyers threatened to intervene to prevent the Canadian band from reissuing its 1970 album, although it was entirely between the bands' lawyers as Rossdale and Domenic Troiano, the leader of the Canadian band, both expressed a willingness to negotiate a solution. In 1997, after the band's second album Razorblade Suitcase also bore the X, Rossdale and Troiano directly negotiated an agreement under which the British band were allowed to drop the X in exchange for donating $20,000 each to the Starlight Foundation and the Canadian Music Therapy Trust Fund. Both Sixteen Stone and Razorblade Suitcase were then reissued without the X.

How long was the album on the charts?

Answer the question at the end by quoting:

Pink Floyd were an English rock band formed in London in 1965. They achieved international acclaim with their progressive and psychedelic music. Distinguished by their use of philosophical lyrics, sonic experimentation, extended compositions, and elaborate live shows, they are one of the most commercially successful and influential groups in popular music history. Pink Floyd were founded by students Syd Barrett on guitar and lead vocals, Nick Mason on drums, Roger Waters on bass and vocals, and Richard Wright on keyboards and vocals.
In December 1967, the group added guitarist David Gilmour as the fifth member of Pink Floyd. Gilmour already knew Barrett, having studied with him at Cambridge Tech in the early 1960s. The two had performed at lunchtimes together with guitars and harmonicas, and later hitch-hiked and busked their way around the south of France. In 1965, while a member of Joker's Wild, Gilmour had watched the Tea Set. Morrison's assistant, Steve O'Rourke, set Gilmour up in a room at O'Rourke's house with a salary of PS30 per week (equivalent to PS500 in 2016), and in January 1968, Blackhill Enterprises announced Gilmour as the band's newest member; the second guitarist and its fifth member, the band intending to continue with Barrett as a nonperforming songwriter. Jenner commented: "The idea was that Dave would ... cover for [Barrett's] eccentricities and when that got to be not workable, Syd was just going to write. Just to try to keep him involved". In an expression of his frustration, Barrett, who was expected to write additional hit singles to follow up "Arnold Layne" and "See Emily Play", instead introduced "Have You Got It Yet?" to the band, intentionally changing the structure on each performance so as to make the song impossible to follow and learn. In a January 1968 photo-shoot of the five-man Pink Floyd, the photographs show Barrett looking detached from the others, staring into the distance. Working with Barrett eventually proved too difficult, and matters came to a conclusion in January while en route to a performance in Southampton when a band member asked if they should collect Barrett. According to Gilmour, the answer was "Nah, let's not bother", signalling the end of Barrett's tenure with Pink Floyd. Waters later admitted, "He was our friend, but most of the time we now wanted to strangle him". In early March 1968, Pink Floyd met with business partners Jenner and King to discuss the band's future; Barrett agreed to leave. Jenner and King believed Barrett to be the creative genius of the band, and decided to represent him and end their relationship with Pink Floyd. Morrison then sold his business to NEMS Enterprises, and O'Rourke became the band's personal manager. Blackhill announced Barrett's departure on 6 April 1968. After Barrett's departure, the burden of lyrical composition and creative direction fell mostly on Waters. Initially, Gilmour mimed to Barrett's voice on the group's European TV appearances; however, while playing on the university circuit, they avoided Barrett songs in favour of Waters and Wright material such as "It Would Be So Nice" and "Careful with That Axe, Eugene".

What was his role in the band prior to leaving?
a nonperforming songwriter.