Striking out on their own
1 JUSTIN TIMBERLAKE
A natural performer, the US actor-singer Timberlake, 34, has collaborated with everyone from Jay Z to Madonna to, uh, McDonald's ("I'm lovin' it", anyone?). He reportedly earned US$31.4 million (S$42.6 million) in 2014, making him last year's third highest-paid musician.
2 ROBBIE WILLIAMS
He has definitely been flying high as a solo artiste. Britpop's bad boy made it to the Guinness World Records for selling a staggering 1.6 million tickets in a single day for his 2006 world tour. Williams, 41, rejoined Take That from 2009 to 2012 "for fun". But these days, he's back to being his own man.
3 NICK JONAS
THE JONAS BROTHERS
Widely regarded as the most talented Jonas (sorry Joe and Kevin!), the 22-year-old hunk has been busy since his band of brothers split. Last year, he released his second solo album, toured with Demi Lovato and will open for Kelly Clarkson when she tours in October.
4 RONAN KEATING
The former Irish frontman has released five solo albums since 1999. With a couple of great hits under his belt (When You Say Nothing At All, Life Is A Rollercoaster), Keating, 38, also recently snagged the lead role in the musical version of Once in London's West End.
5 NATHAN SYKES
Since the English-Irish boy band announced their hiatus last year, Sykes, 21, released a high-profile ballad, Almost Is Never Enough, with his high-profile former girlfriend Ariana Grande. His latest solo single, More Than You'll Ever Know, is soulfully smooth, which smacks of great things to come.