As A-ha celebrate the 40th anniversary of their debut album, the band's frontman Morten Harket has announced he has Parkinson's.

Morten Harket has revealed he has Parkinson’s disease. The singer of a-ha, the band behind the 1985 hit and innovatively animated music video “Take On Me,” shared the news during an interview with the group’s biographer.

The lead singer of the band known for its classic 1985 hit "Take On Me" said he has undergone multiple neurosurgical procedures since being diagnosed.