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The singer co-wrote and produced 'Falling Down' with Duran Duran about his former lover's turbulent life. The video accompanying the track shows a girl who resembles Spears entering a rehab clinic.
Duran Duran drummer Roger Taylor said: "I suppose it's loosely based on her, but not only on one celebrity - just celebrity culture in general.
"A lot of young celebrities seem to disappear into rehab. So it's kind of like, what could be happening in your wildest dream in that rehab centre?"
Frontman Simon Le Bon said: "I haven't spoken to Justin since the video has been made public. But he likes his pretty girls, so he probably would like it."
He added: "I just wish Britney could accept help. It seems that all the people who care about her, she's pushing away."
Timberlake is thought to have written hit single 'Cry Me a River' about Spears following the couple's split in 2002.
