LFO lead singer Rich Cronin has lost his battle with leukemia.
The boy band star died on Wednesday, two weeks after his 35th birthday.
Cronin, who wrote LFO's 1999 hit "Summer Girls," suffered a stroke and died in the hospital.
Former *NSYNC stars Chris Kirkpatrick and Lance Bass, who were friends with Cronin, have both paid their respects online.
In a post on his Facebook.com page, Kirkpatrick writes, "Rip to a great friend rich c."
Bass took to Twitter.com to write, "Sad sad day that Rich Cronin died - was a amazing guy."
Kirkpatrick and Cronin starred together in the short-lived reality TV series "Mission: Man Band."
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