evidence: Tom Jones has broken his silence after sparking concern among fans after they spotted a worrying symptom when he appeared on The Voice last Saturday night. [...] Tom has since taken to Instagram to share a video of him performing with contestant Stan. He captioned it: "Great to perform with the marvellous Stan on @thevoiceuk." [...] "That's what the fella [doctor] told me. But I've got a tour to do in America first, I can't go in now. He said, 'Well, you should!' I said, 'I can't, I've got a show to do!'"