Background: Keith Jarrett (born May 8, 1945) is an American jazz and classical music pianist. Jarrett started his career with Art Blakey, moving on to play with Charles Lloyd and Miles Davis. Since the early 1970s he has enjoyed a great deal of success as a group leader and a solo performer in jazz, jazz fusion, and classical music. His improvisations draw from the traditions of jazz and other genres, especially Western classical music, gospel, blues, and ethnic folk music.
Context: In 1983, at the suggestion of ECM head Manfred Eicher, Jarrett asked bassist Gary Peacock and drummer Jack DeJohnette, with whom he had worked on Peacock's 1977 album Tales of Another, to record an album of jazz standards, simply titled Standards, Volume 1. Two more albums, Standards, Volume 2 and Changes, both recorded at the same session, followed soon after. The success of these albums and the group's ensuing tour, which came as traditional acoustic post-bop was enjoying an upswing in the early 1980s, led to this new standards trio becoming one of the premier working groups in jazz, and certainly one of the most enduring, continuing to record and tour for more than 25 years. The trio has recorded numerous live and studio albums consisting primarily of jazz repertory material. The Jarrett-Peacock-DeJohnette trio also produced recordings that consist largely of challenging original material, including 1987's Changeless. Several of the standards albums contain an original track or two, some attributed to Jarrett, but most are group improvisations. The live recordings Inside Out and Always Let Me Go (released in 2001 and 2002 respectively) marked a renewed interest by the trio in wholly improvised free jazz. By this point in their history, the musical communication among these three men had become nothing short of telepathic, and their group improvisations frequently take on a complexity that sounds almost composed. The standards trio undertakes frequent world tours of recital halls (the only venues in which Jarrett, a notorious stickler for acoustics, will play) and is one of the few truly successful jazz groups to play both straight-ahead (as opposed to smooth) and free jazz. A related recording, At the Deer Head Inn (1992), is a live album of standards recorded with Paul Motian replacing DeJohnette, at the venue in Delaware Water Gap, Pennsylvania, 40 miles from Jarrett's hometown, where he had his first job as a jazz pianist. It was the first time Jarrett and Motian had played together since the demise of the American quartet sixteen years earlier.
Question: what changeless successful?
Answer: Several of the standards albums contain an original track or two, some attributed to Jarrett, but most are group improvisations.

Problem: Background: Stone Sour is an American rock band formed in Des Moines, Iowa, in 1992, performing for five years, before disbanding in 1997. They reunited in 2000 and since 2006, the group has consisted of Corey Taylor (lead vocals, guitar), Josh Rand (guitar) and Roy Mayorga (drums). Longtime members Joel Ekman (drums, percussion), Shawn Economaki (bass guitar), and Jim Root (guitar) left the group in 2006, 2011, and 2014 respectively. To date, Stone Sour have released six studio albums Stone Sour (2002); Come What(ever)
Context: The band released a song called "The Pessimist" as a free download on their Facebook page on March 27, 2012. The song was previously only available on the iTunes deluxe version of the soundtrack to Transformers: Dark of the Moon. They also released their first DVD Live at Brighton in the same year, capturing their performance on November 7, 2010. It was announced via Instagram on May 3, 2012 that bassist Shawn Economaki had parted ways with the band on amicable terms. He was replaced in the studio by current Skid Row bassist Rachel Bolan. Stone Sour started recording their fourth studio album in early 2012. Corey Taylor stated that the album would end up being a double album or concept album, and described the album's sound as "Pink Floyd's The Wall meets Alice in Chains's Dirt". It was later announced that the new material would be released as two separate albums. The first album, House of Gold & Bones - Part 1 was released worldwide on October 23, 2012, and the second album House of Gold & Bones - Part 2 was released worldwide on April 9, 2013. The project also has a 4-part graphic novel series that accompanies the albums, telling the linear storyline featured in the twin albums' lyrics. The first two songs from Part 1, "Gone Sovereign" and the first official single, "Absolute Zero" were released for radio airplay in mid/late August 2012. The first single from House of Gold & Bones Part 2 was "Do Me a Favor". It was released digitally on February 12. Guitarist Josh Rand stated in an interview with O2 Academy that there was a song recorded for Part 1, an instrumental which was deemed 'not up to par' by the band. The song will likely be released in the future once James Root and Josh Rand do 'some stuff to it guitar-wise'. On October 5, 2012, Johny Chow of Fireball Ministry and Cavalera Conspiracy was announced as the bassist for the band on the House of Gold & Bones tour cycle. Stone Sour subsequently played Soundwave Festival 2013 in Australia and on the Sunday at Download Festival 2013. Guitarist James Root did not tour with Stone Sour in the winter of 2013, as he had to take a brief hiatus from the group to work on .5: The Gray Chapter with Slipknot, although it was later revealed that he was fired from the band due to musical differences. He claimed that the band wanted to focus on "radio play and money," in which Root fought against, and that led to a split. Christian Martucci filled in for Root during that period.
Question: Did they perform with other artists
Answer:
He was replaced in the studio by current Skid Row bassist Rachel Bolan.