input: Sandberg was born in Stockholm and grew up in the suburb Stenhamra, Ekero Municipality.  As a child, Martin was a student of Sweden's public music-education program, and once said he had "public music education to thank for everything." Other alumni of the program include Andreas Carlsson, Rami Yacoub, and Anders Bagge.  As a teenager he sang in a variety of bands before joining a glam-style metal band called It's Alive in 1985 as their singer and frontman. It's Alive were formed by ex-LAZY members Per Aldeheim and Kim Bjorkgren on guitars, and John Rosth who had been a member of Lineout. Martin eventually dropped out of high school to pursue a career in music with his band under the nickname "Martin White." In 1988 they participated in the national rock championships and played as the in-house band at a disco in Cyprus. The band got a breakthrough in 1991, as Dave Constable of Megarock Records offered them to make a demo-record. The later debut album was originally pressed in 1,000 copies and later on given away as a free cover tape in the UK by the Metal Forces magazine.  The decision to focus on a music career paid off as they landed a record deal on producer Denniz PoP's label Cheiron Records, a BMG affiliate. After recording their second album Earthquake Visions, they released three singles in conjunction with the record and toured through Europe in 1994 supporting Kingdom Come. Earthquake Visions eventually sold a disappointing 30,000 copies, despite being released in as many as 30 countries. More importantly though, Martin also began collaborating on songs with PoP. Recognizing a talent for writing pop songs in the young rocker, PoP renamed his new protege Max Martin and eventually became Martin's mentor.

Answer this question "When did he become a singer?"
output: As a child,

input: Jason Isbell released his first solo album, Sirens of the Ditch, on July 10, 2007. In 2012, Isbell supported singer-songwriter Ryan Adams on his tour. Both played solo acoustic sets.  On June 11, 2013, Isbell released his fourth solo album, Southeastern. Produced by Dave Cobb and featuring accompanying vocals by Kim Richey and Isbell's wife, Amanda Shires, Southeastern received overwhelmingly positive critical reviews, earning a score of 87 on Metacritic. Southeastern led to Isbell's clean sweep of the 2014 Americana Music Awards. Southeastern won Album of the Year, Isbell was named Artist of the Year, and the song "Cover Me Up" was named Song of the Year. NPR rock critic Ken Tucker listed Southeastern at No. 1 on his top ten albums of 2013. Isbell's record received praise by artists like Bruce Springsteen and John Prine. Isbell's music video for the song "Traveling Alone" features the Jackson House, a historic home in Moulton, Alabama. In 2014, his song "Cover Me Up" was used as the weather for the Welcome to Night Vale episode "Visitor".  Isbell's fifth solo record, Something More Than Free, was released on July 17, 2015, on Southeastern Records. Dave Cobb produced, continuing the partnership created with Isbell on Southeastern. They recorded the album at Nashville's Sound Emporium studio with a full band. During the summer of 2015, Isbell was on a North American tour to promote the album, with four consecutive sold-out nights at the Ryman Auditorium in Nashville at the end of October. In April 2016, Isbell appeared on the BBC live-music show Later With Jools Holland, singing "The Life You Chose", one of the tracks from Something More Than Free.  Isbell said that compared to Southeastern, Something More Than Free has a feeling of celebration, which reflects his upcoming fatherhood and a forward-facing momentum. One track on the record, "To a Band I Loved", is a love-letter to the band Centro-Matic, a now defunct band from Denton, Texas, Isbell played with back in his Drive-By Truckers days.  Something More Than Free debuted at number 1 on Billboard Magazine's rock, folk and country record charts. Although Isbell had had critical success in the Americana genre, this was the first time he received such high ranking across genres. The album was well received, winning two Grammy awards for Best Americana Album and Best American Roots Song ("24 Frames"). On May 11, 2016, Isbell, a four-time winner, was nominated for three more Americana Music Honors & Awards: Album of the Year (Something More Than Free), Song of the Year ("24 Frames"), and Artist of the Year. He won the first two, while Chris Stapleton won Artist of the Year.

Answer this question "What else happen with his solo work"
output: Southeastern led to Isbell's clean sweep of the 2014 Americana Music Awards. Southeastern won Album of the Year, Isbell was named Artist of the Year, and

input: The initial incarnation of Fleetwood Mac performed its first gig in August 1967 at the seventh annual Windsor Jazz and Blues Festival, playing a Chicago-style blues. McVie, initially hesitant to commit, was later prompted to leave the Bluesbreakers and join Fleetwood Mac full-time when the former adopted a horns section with which he disagreed. He replaced the initial bassist, Bob Brunning. McVie, Fleetwood, Green and guitarist Jeremy Spencer thus formed the first fixed line-up of Fleetwood Mac.  The band's first album, Peter Green's Fleetwood Mac, was released in 1968, and the band toured the United States for the first time, though Green was reluctant to do so for fear of gun crime. Upon their return, they recorded a second album, Mr. Wonderful under simply "Fleetwood Mac" with Green's name dropped. A guest musician on the album, Christine Perfect, became close with the group and she and McVie were married in 1968. A third guitarist, Danny Kirwan, was also added to the line-up. Despite the success of their third album, Then Play On, and a string of hit singles including "Albatross" and "Man of the World", Green himself drifted away from the band, struggling both creatively and with increasing use of LSD. He later joined a Christian religious group.  Fleetwood himself later remarked on the growing stature of Green's difficulties: "I think there is certainly some credence given to the idea that Peter's condition could in some way be blamed on a bad acid trip he had in Germany ... I don't think it did him much good." He also recalled in 1995 that "Peter basically ceased to see the light with Fleetwood Mac and had aspirations of playing for nothing in strange places--none of which really happened. He made several interesting albums after he left, then basically took a left turn in terms of his psyche. He pulled out of the mainstream and chose to stay at home. He doesn't play much anymore, which is certainly a shame, because he's my mentor, and he's the reason that Fleetwood Mac became what we became."

Answer this question "Who was he replaced with?"
output: