Sir Tom Jones will no longer be taking the stage in Germany as previously scheduled, as the Welsh singer has announced that illness has made him unable to perform at his upcoming show.

As announced Tuesday (July 22) via a statement on his Instagram, the icon shared that he’d be postponing that night’s concert in Bremen to a later date. The performance at Seebühne waterfront will now take place on July 28.

“Hello to all the fans in Bremen,” Jones began in his statement. “Unfortunately, I must postpone my show this evening, as I’ve contracted an upper respiratory infection that needs treatment and rest. I know this is really disappointing and will cause inconvenience to you all, and I’m very sorry about that.”

The musician went on to emphasize that all tickets purchased for the postponed show would remain valid for the makeup performance on the 28th. “I look forward to seeing you then,” he added. “Until then, thank you for your understanding.”

The announcement comes as Jones — the hitmaker behind Billboard Hot 100 top 10s “It’s Not Unusual,” “What’s New Pussycat?” and “I’ll Never Fall in Love Again” — is traveling through Europe on a summer-long tour that will wrap in late August. Shortly before kicking off the trek in June, he wrote on Instagram, “I’m very much looking forward to be performing again for you all.”

Also in June, Jones rang in his 85th birthday, which he celebrated on the set of The Voice U.K. The musician has been a coach for 14 seasons, and he is currently filming the next installment with fellow judges Kelly Rowland, Will.I.Am and McFly.

See Jones’ announcement below.