Problem: Background: Earth Crisis is an American metalcore band from Syracuse, New York, active from 1989 until 2001, reuniting in 2007. Since 1993 the band's longest serving members are vocalist Karl Buechner, guitarist Scott Crouse, bassist Ian Edwards and drummer Dennis Merrick. Their third guitarist Erick Edwards joined the band in 1998. The band has released eight studio albums, three compilations, two live albums and six music videos.
Context: The band originally formed in 1989, after bassist Karl Buechner proposed the idea to his friend DJ Rose, whom he knew because both skateboarded together. Rose became the vocalist and they were joined by Jesse Buckley on drums and John Moseman on guitar. Established in the latter part of the youth crew heyday, where many groups disbanded and their members stopped being straight edge, they wanted to "keep that torch burning", as Buechner said. "The feeling of disappointment we had in those bands lead us to promote straight edge as being a lifetime commitment to never touch a drop of poison. We wanted people to know they can believe in us." Rose named the band after the 1984's album of the same name from the British reggae band Steel Pulse, because its cover portrayed many of the things they "would stand against", such as the starving African children, the two blocs of the Cold War and Klansmen. Its initial lineup was short-lived; they had two or three practices and played a show in Utica, New York. After that performance, DJ Rose decided to quit the group to spend more time booking shows. Karl Buechner continued composing and formed a new lineup of the band in 1991, after attending a skateboard demonstration where he met members of the also vegan straight edge band Framework. He switched to lead vocals in the process and was joined by four of the five members of Framework: guitarist Scott Crouse, bassist Ian "Bulldog" Edwards, guitarist Ben Read and drummer Michael Riccardi, all who participated in EC as a side project. 1992's three song EP All Out War marked their debut release and shortly afterwards this became their first priority. In the summer of 1993, at the start of the All Out War tour, Earth Crisis recorded the Firestorm EP in the studio of Bill Korecky in Cleveland and released it through Victory Records. For this album, Riccardi was replaced by Dennis Merrick. Later on, Ben Read was replaced by Kris Wiechmann. Destroy the Machines, their first full-length record, was released in 1995 and would eventually become the best-selling album in the history of Victory Records. Later this year, the band's touring van was involved in an accident that injured all band members, most severely Merrick. During his recovery time, the other band members began the group Path of Resistance with Riccardi, DJ Rose and another friend to remain occupied.
Question: Who is in charge of the band
Answer: Karl Buechner

Problem: Background: Sly and the Family Stone was an American band from San Francisco. Active from 1966 to 1983, the band was pivotal in the development of funk, soul, rock, and psychedelic music. The group's core line-up was led by singer-songwriter, producer, and multi-instrumentalist Sly Stone, and included Stone's brother and singer/guitarist Freddie Stone, sister and singer/keyboardist Rose Stone, trumpeter Cynthia Robinson, drummer Greg Errico, saxophonist Jerry Martini, and bassist Larry Graham. The band was the first major American rock group to have a racially integrated, male and female lineup.
Context: With the band's new-found fame and success came numerous problems. Relationships within the band were deteriorating; there was friction in particular between the Stone brothers and Larry Graham. Epic requested more marketable output. The Black Panther Party demanded that Sly replace Gregg Errico and Jerry Martini with black instrumentalists and fire manager David Kapralik. After moving to the Los Angeles area in fall 1969, Sly Stone and his fellow band members became heavy users of illegal drugs, primarily cocaine and PCP. As the members became increasingly focused on drug use and partying (Sly Stone carried a violin case filled with illegal drugs wherever he went), recording slowed significantly. Between summer 1969 and fall 1971, the band released only one single, "Thank You (Falettinme Be Mice Elf Agin)" / "Everybody Is a Star", released in December 1969. "Thank You" reached the top of the Billboard Hot 100 in February 1970. In 1970, Sly Stone spent most of his waking hours on drugs. He became erratic and moody, and missed nearly a third of the band's concerts that year. The band did close out the Strawberry Fields Festival near Toronto, Ontario in August but live appearances on television talk shows such as The Mike Douglas Show and The Dick Cavett Show went unpredictably. Meanwhile, Sly hired his streetwise cohorts, Hamp "Bubba" Banks and J.B. Brown, as his personal managers; they in turn brought in gangsters such as Edward "Eddie Chin" Elliott and Mafioso J.R. Valtrano to be Sly's bodyguards. Sly enlisted these individuals to handle his business dealings, to retrieve drugs, and to protect him from those he considered his enemies, some of whom were his own bandmates and staff. A rift developed between Sly and the rest of the band; in early 1971, drummer Errico became the first to leave the band for other ventures. He was replaced with a succession of drummers until Sly settled on Gerry Gibson, who only remained with the band for a year before being replaced by Andy Newmark in 1973. To appease fan demand for new songs, Epic began re-releasing material. A Whole New Thing was reissued with a new cover, and several of the Family Stone's most popular recordings were packaged into the band's first Greatest Hits album. Greatest Hits reached number two on the Billboard 200 in 1970. During this period, Sly Stone negotiated a production deal with Atlantic Records, resulting in his own imprint, Stone Flower Productions. Stone Flower released four singles, including one by R&B artist Joe Hicks, one by a group called 6IX, and two pop Top 40/R&B Top 10 singles by Little Sister: "You're the One" and "Somebody's Watching You", a cover of a song from Stand!. For unclear reasons, Sly gradually withdrew his attention from Stone Flower, and the label was closed in 1971. Little Sister's "Somebody's Watching You" is the first popular recording to feature the use of a drum machine for its rhythm track.
Question: When did Gibson join the band?
Answer:
who only remained with the band for a year before being replaced by Andy Newmark in 1973.