Usher has postponed four shows in the last few days due to illness, and walked off stage in Berlin on 12 January because he was too sick to continue.

The Michael Jacksongave him when he was a teenager. “Michael Jackson told me to be the best I can be and know that as people, we are always making history in everything we do,” he recalled. “I’ll never forget that.” The 32-year-old said he hoped to mentor protégé Justin Bieberas well as Michael had guided him.