Morten Harket, the lead singer of Norwegian band A-ha, whose Take On Me track remains one of the most popular songs from the 1980s, said on Wednesday (Jun 4) that he had been diagnosed with Parkinson's disease.

In a statement on the band's website, and confirmed by record label Sony Music, Harket, 65, said he had undergone several rounds of brain surgery and that he was managing the symptoms of the disease.

Parkinson's causes deterioration in the brain's nervous system, leading to tremors and other symptoms that can become progressively worse over time. The disease can be treated with surgery and medication, but there is no cure.

Harket said he last year underwent neurological procedures to have electrodes implanted inside his brain and that this had reduced the symptoms.

Known for the

See Full Page