United Kingdom, June 4 -- A-ha singer Morten Harket has been diagnosed with Parkinson's disease.

The 65-year-old star - who is the frontman and a founding member of the 'Take On Me' hitmakers - has accepted the diagnosis as he battles the degenerative condition, having originally planned to keep it "strictly private".

The band announced in a statement: "This isn't the sort of news anyone wants to deliver to the world, but here it is: Morten has Parkinson's disease."

In his own statement on the group's official website, Morten said: "I've got no problem accepting the diagnosis.

"With time I've taken to heart my 94-year-old father's attitude to the way the organism gradually surrenders: 'I use whatever works.' "

Although part of Morten...