A 60s star wowed the crowd as he joined Van Morrison on stage for the first night of the Sandringham Estate concerts.
Van Morrison performed on Friday night (August 25), kicking off Heritage Live's outdoor concert series at the estate in style.
He is followed by Robbie Williams on Saturday and Sunday, with two sell-out shows, and The Who on the Bank Holiday Monday.
There is capacity for 20,000 people at each gig and Heritage Live's managing director Giles Cooper had already teased "lots of surprises" at the concerts.
The first of these was Chris Farlowe on Friday, who is best known for the 1966 number-one single Out of Time, written by Mick Jagger and Keith Richards.
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He is also known for his association with the bands Atomic Rooster, the Thunderbirds and Colosseum.
Van Morrison’s career has seen him traverse, and indeed master, everything from British R&B, in which he originally made his name, to jazz, Celtic and soul.
His songs include Brown Eyed Girl, Gloria, Here Comes The Night, Jackie Wilson Said, Bright Side Of The Road and Have I Told You Lately.
Taking to the stage before his headline set was Old Time Sailors, Del Amitri and Squeeze.
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