Background: REO Speedwagon (originally styled as R.E.O. Speedwagon) is an American rock band from Champaign, Illinois. Formed in 1967, the band cultivated a following during the 1970s and achieved significant commercial success throughout the 1980s. Hi Infidelity (1980) contained four US Top 40 hits and is the group's best-selling album, with over ten million copies sold. Over the course of its career, the band has sold more than 40 million records and has charted thirteen Top 40 hits, including the number ones "
Context: By the late 1980s, the band's popularity was starting to decline. Alan Gratzer left in September 1988 after he decided to retire from music to open a restaurant. In early 1989, Gary Richrath quit after tensions between him and Kevin Cronin boiled over. Cronin had been playing in The Strolling Dudes, a jazz ensemble that included jazz trumpet player Rick Braun (who had co-written the abovementioned "Here With Me" with Cronin), Miles Joseph on lead guitar and Graham Lear on drums. Lear had already been invited to join REO in September 1988 as Gratzer's successor and Joseph was brought in as a temporary stand-in for Richrath. Back up singers Carla Day and Melanie Jackson were also added. This lineup did only one show, on January 7, 1989 in Vina del Mar, Chile, where it won the award for best group at the city's annual International Song Festival. After that, Miles Joseph and the back up singers were dropped in favor of former Ted Nugent guitarist Dave Amato (who was brought aboard in May 1989) and keyboardist/songwriter/producer Jesse Harms. The 1990 release The Earth, a Small Man, His Dog and a Chicken, with Bryan Hitt (formerly of Wang Chung) on drums, was a commercial disappointment. The album produced only one, and - to date - the band's last Billboard Hot 100 single, "Love Is a Rock," which peaked at #65. Harms, disenchanted by the album's failure, left the group in early 1991. Shortly after his departure, Richrath assembled former members of the Midwestern band Vancouver to form a namesake band, Richrath. After touring for several years, the Richrath band released Only the Strong Survive in 1992 on the GNP Crescendo label. Richrath (the band) continued to perform for several years before disbanding in the late 1990s. In September 1998, Gary Richrath briefly joined REO onstage at the County Fair in Los Angeles to play on band's encore song, "157 Riverside Avenue". He then joined REO once again in Los Angeles in May 2000 for the same encore but no serious plans for a reunion ever materialized. Having lost their recording contract with Epic, REO Speedwagon ended up releasing Building the Bridge (1996) on the Priority/Rhythm Safari label. When that label went bankrupt, the album was released on Castle Records, which also experienced financial troubles. REO Speedwagon ultimately self-financed this effort, which failed to chart. The title track did make R&R's AC Top 30 chart.
Question: Did they have any other changes in their lineup?
Answer: Back up singers Carla Day and Melanie Jackson were also added.

Background: Scott Richard Weiland (; ne Kline, October 27, 1967 - December 3, 2015) was an American musician, singer and songwriter. During a career spanning three decades, Weiland was best known as the lead singer of the band Stone Temple Pilots from 1989 to 2002 and 2008 to 2013. He was also a member of supergroup Velvet Revolver from 2003 to 2008 and recorded one album with another supergroup, Art of Anarchy.
Context: Weiland married Janina Castaneda on September 17, 1994; the couple divorced in 2000. He married model Mary Forsberg on May 20, 2000. They had two children, Noah (born 2000) and Lucy (born 2002). Weiland and Forsberg divorced in 2007. In 2005, Weiland and his son Noah were featured on comedian David Spade's The Showbiz Show with David Spade during a comedy sketch about discouraging music file sharing. Noah has a line during the sketch in which he asks a little girl, "Please buy my daddy's album so I can have food to eat." Weiland was a Notre Dame Fighting Irish football fan, as his stepfather is an alumnus. In September 2006, Weiland performed at the University of Notre Dame's Legends Restaurant on the night before a football game. He sang several of his solo songs as well as "Interstate Love Song" and a cover of Pink Floyd's "Wish You Were Here". In a 2007 interview with Blender magazine, Weiland mentioned that he was raised a Catholic. Mary Forsberg Weiland's autobiography Fall to Pieces was co-written with Larkin Warren and released in 2009. Scott Weiland's autobiography, Not Dead & Not for Sale, co-written with David Ritz, was released May 17, 2011. In a November 2012 interview with Rolling Stone, Weiland revealed that he was engaged to photographer Jamie Wachtel whom he met during the 2011 filming of his music video for the song, "I'll Be Home for Christmas". Weiland and Wachtel married on June 22, 2013, at their Los Angeles home.
Question: What are his children's names?
Answer: Noah (born 2000) and Lucy (born 2002).

Background: Boyz II Men is an American R&B vocal group from Philadelphia, Pennsylvania, best known for emotional ballads and a cappella harmonies. They are currently a trio composed of baritone Nathan Morris alongside tenors Wanya Morris and Shawn Stockman. During the 1990s, Boyz II Men found fame on Motown Records as a quartet including bass Michael McCary, who left the group in 2003 due to health issues. During the 1990s, Boyz II Men gained international success.
Context: Motown issued The Remix Collection, a compilation of remixes of various Boyz II Men songs from Cooleyhighharmony and II. The group itself had opposed the release of the collection, because they felt the compilation did not represent Boyz II Men's best work. After the label released the album without their permission, there was a dispute between the company and the group. Boyz II Men initiated their own recording company Stonecreek (which released material by artists such as Uncle Sam), and they arranged for Stonecreek's distribution by Epic Records, not Motown. Boyz II Men's third studio album, Evolution, was released during 1997 to mixed reviews and sold three million copies, far below the stratospheric success of II's (12 million copies) and Cooleyhighharmony (9 million). Only one of Evolution's singles, the Jam/Lewis-penned "Four Seasons of Loneliness", reached number 1 on the Hot 100 chart. The second single, the Babyface-helmed "A Song for Mama" (the theme song to the Babyface-produced film Soul Food) was a Top 10 success, but the follow-up "Can't Let Her Go" underperformed. The global tour began in 1997 to promote Evolution was very successful in terms of ticket sales, but behind the scenes, Boyz II Men was wracked by conflicts with their record label and internal conflicts among the members of the group. Making matters worse, health problems began to take their toll on the group as well. While on tour to support the Evolution album, Wanya Morris developed a polyp on his vocal cords, and the group was forced to postpone part of the tour until he recovered. McCary's scoliosis meant that he was unable to participate in most of the group's dance routines. Boyz II Men were nominated for 2 Grammys in 1998: Best R&B Album for Evolution and Best R&B Vocal Performance by a Duo or Group for "A Song for Mama".
Question: Who left the group on 2003?
Answer:
McCary's scoliosis meant that he was unable to participate in most of the group's dance routines.