Question:
The Osmonds are an American family music group with a long and varied career. The Osmond Brothers began as a barbershop quartet consisting of brothers Alan, Wayne, Merrill and Jay Osmond. They were later joined by younger siblings Donny and Jimmy, both of whom enjoyed success as solo artists as well. With the addition of Donny, the group became known as The Osmonds, and enjoyed its greatest success as both a boy band and a hard rock ensemble.
Donny, and to a lesser extent, Marie and Jimmy, soon began to emerge as solo artists. Jimmy was becoming "big in Japan", and in 1972 had a #1 hit in the United Kingdom with "Long Haired Lover from Liverpool". Marie, then 13 years old, hit #1 on the US country chart in 1973 with "Paper Roses" (a song originally recorded by Anita Bryant a decade prior). Donny had a string of pop hits with a string of covers of earlier teen-pop songs, including "Go Away Little Girl" (#1, originally by Steve Lawrence), "Puppy Love" (#3, a Paul Anka composition) and "The Twelfth of Never" (#8, originally recorded by Johnny Mathis). From 1971 to 1976, he had 12 Top 40 hits, including 5 in the Top 10; for most of these, the Osmonds were still performing as a full band, but backing and giving star billing to Donny for songs on which he sang lead. Donny's popularity, and his numerous solo hits, have led many to assume he was the group's lead. Merrill was nevertheless the usual lead singer; Donny would usually sing the choruses on songs billed to The Osmonds, thus being a "co-lead". (The family resemblance between Donny and Merrill at the time likely made the confusion worse; in later years, Merrill grew out his beard and let his hair go gray to distinguish the two.) Donny's emergence as a solo star and the record company's desire to appeal to the teen-girl audience often thrust Donny out in front of the group. By now the family was touring, recording, creating and producing for five technically separate artists: The Osmonds, Donny Osmond, Marie Osmond and Jimmy Osmond -- plus Donny and Marie had begun recording duets and had hits with "I'm Leaving It Up to You" (#4) and "Morning Side of the Mountain" (#8). Through all the stress and pressures created by these many efforts, the family hung together. The 2001 ABC-TV movie Inside the Osmonds depicts the family mottoes as being "It doesn't matter who's out front, as long as it's an Osmond" family, faith, and career. In that order". The original Osmonds as a group still produced hits. In 1974, "Love Me for a Reason" reached #10 in the US and #1 in the UK. The Irish boy band Boyzone took the song to #2 in the UK in 1994.
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How did their solo carrers take off?

Answer:
Jimmy was becoming "big in Japan",

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The Waterboys are a Scottish/Irish folk rock band formed in Edinburgh in 1983 by Scottish musician Mike Scott. The band's membership, past and present, has been composed mainly of musicians from Scotland and Ireland with Edinburgh, Dublin, Spiddal, New York and Findhorn, serving as homes for the group. Mike Scott has remained as the only constant member throughout the band's career. They have explored a number of different styles, but their music is mainly a mix of Celtic folk music with rock and roll.
At the invitation of new member Steve Wickham, Mike Scott moved to Dublin and quickly became influenced by the traditional Irish music there as well as by country and gospel. The band's line-up changed once again with Scott, Wickham and Thistlethwaite now joined by Trevor Hutchinson on bass and Peter McKinney on drums. The new band, which the official Waterboys' website refers to as the "Raggle Taggle band" line-up, spent 1986 and 1987 recording in Dublin and touring the UK, Ireland, Europe and Israel. Some of these performances were released in 1998 on The Live Adventures of the Waterboys, including a famous Glastonbury performance in 1986. In 1988 Scott took the band to Spiddal in the west of Ireland where they set up a recording studio in Spiddal House to finish recording their new album. Fisherman's Blues was released in October 1988 and showcased many guest musicians that had played with the band in Dublin and Spiddal. Critics and fans were split between those embracing the new influence of Irish and Scottish folk music and others disappointed after hoping for a continuation of the style of This Is the Sea. World Music: The Rough Guide notes that "some cynics claim that Scotsman Mike Scott gave Irish music back to the Irish... his impact can't be underestimated", but Scott himself explains that it was the Irish tradition that influenced him; "I was in love with Ireland. Every day was a new adventure, it was mythical... Being part of a brotherhood of musicians was a great thing in those days, with all the many musicians of all stripes we befriended in Ireland. I still have that connection to the Irish musicians and tap into it..." Owing to the large number of tracks that were recorded in the three years between This Is the Sea and Fisherman's Blues, The Waterboys released a second album of songs from this period in 2001, titled Too Close to Heaven (or Fisherman's Blues, Part 2 in North America), and more material was released as bonus tracks for the 2006 reissue of the remastered Fisherman's Blues album. After further touring the band returned to Spiddal to record a new album. The Waterboys now consisted of Mike Scott, Steve Wickham, Anthony Thistlethwaite, Colin Blakey on whistle, flute and piano, Sharon Shannon on accordion, Trevor Hutchinson on bass and Noel Bridgeman on drums. Their fifth album, Room to Roam was released in September 1990. One of the album's tracks was a recording of the traditional ballad "The Raggle Taggle Gypsy". Just before Room to Roam was released, Wickham left over a disagreement with Scott and Thistlethwaite regarding the future direction of the band's sound. Scott and Thistlethwaite wanted to move the band back to a more rock and roll style, and Wickham disagreed. His departure started the band's dissolution, and in his wake Shannon and Blakey both left. Scott, Thistlethwaite and Hutchinson recruited Ken Blevins on drums to fulfil the group's tour dates.

What changed
The band's line-up changed once again with