Tom Jones was forced to pull out of his Olympics performance in London's Hyde Park on Saturday due to doctor's orders.
Jones had contracted bronchitis and his doctor's advised him to cancel shows on Saturday and Sunday.
The singer tweeted his apologies to his fans. He later added "Thanks for all the lovely messages, I don't know if everyone's understanding and support is making me feel better or worse! You're the best!"
Singer Will Young filled in for him on the bill.
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