US R&B star Alicia Keys has postponed two concerts on her European tour after her doctor told her to rest her voice.
Keys is famed for her soul-tinged hip-hop
Her publicist Patti Webster said she was spending the next few days off stage due to laryngitis.
Grammy-winning Keys was meant to be performing on Monday in Glasgow and on Tuesday in Manchester.
The dates will be rescheduled. Keys won two Grammys for best female R&B vocal performance and best R&B song at this month's awards, for her single No One.
Despite a rocky start to her recording career, which saw her signed and dropped by Columbia records, her debut album, Songs In A Minor, was a global success.
It sold more than 12m copies, and won Keys five Grammy awards in 2002.
Her latest album, As I Am, has sold millions of copies worldwide.