Mungo Jerry frontman Ray Dorset is suing his former management company over allegations of unpaid royalties from the band's song In The Summertime.
The catchy 1970 track was a hit around the world, but Dorset is convinced he's lost out on a fortune in potential earnings from its use in several TV adverts.
He claims Associated Music International (Ami), run by his former friend and business manager Eliot Cohen, underpaid him by more than $3.2 million (£2 million) over 17 years.
Dorset has taken his case to court, and a preliminary hearing took place earlier this month (Jan12), according to Britain's Mail On Sunday.
Chiefs at Ami strongly denied the allegation of underpayment and the case is due to be heard in full later this year (12).
Cohen's solicitor Nigel Davies says, "The claims by Mr Dorset are totally unfounded and are denied in their entirety."