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.
Solo careers take off
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.

Q: How did their solo carrers take off?
A: Jimmy was becoming "big in Japan",
Why was he becoming big?
", and in 1972 had a #1 hit in the United Kingdom with "Long Haired Lover from Liverpool".
", and in 1972 had a #1 hit in the United Kingdom with "Long Haired Lover from Liverpool".