He agreed to be interviewed on a two-part Radio 2 programme about Olivia Newton-John, who performed as a backing singer for him during the early days of her career. The second part of the show airs next Monday.
Sir Cliff Richard is currently suing the BBC and South Yorkshire Police after a police raid on his Berkshire home was broadcast live.
It led to the 76 year old being identified as a child sex abuse suspect. He always denied the claims and, last June, he was cleared of all allegations.
Legal representations claimed Sir Cliff suffered 'profound and long-lasting' harm from the coverage and his privacy rights were infringed.
Appearing on the BBC's One Show last November (pictured above) to promote his 102nd album, he said his relationship with the corporation was "just fine".
The Daily Mirror's showbiz reporter Tom Bryant speculated that his latest BBC appearance marks a sign the legal battle "is drawing to a close".
The BBC told the newspaper Sir Cliff was never banned from appearing on BBC shows despite the court battle.
Earlier this month, the BBC claimed Sir Cliff Richard has spent "grossly unreasonable" amounts of money of court costs - money the corporation could be liable to pay if it loses the legal battle.
It's thought the singer has run up costs of more than £500,000.