The 'Home' singer's little boy is set to undergo treatment for liver cancer.
JLS unveil new single
See "Take a Chance On Me" below
The new single will be released on November 7, a week ahead of their third album "Jukebox".
"Take a Chance On Me" is the second single from their new record.
The first one, "She Makes Me Wanna" was released in late July and went on to reach the number 1 spot of the UK single chart.
"This song means the world to us" said band member Oritsé Williams of the new track "It's the kind of song we haven't done before – it's very personal".
The star headed straight from the jungle to panto...but clearly hadn't had time to learn her lines!