Madonna is facing legal action after allegedly failing to pay to sample another song in her classic hit "Vogue."

Executives at record company VMG Salsoul have accused the "Material Girl" of using the horns and strings heard in Salsoul Orchestra's dance tune "Chicago Bus Stop (Ooh, I Love It)."

In the lawsuit, filed in Los Angeles and obtained by TMZ, it is claimed Madonna has made huge profits off Vogue since its release in 1990.

Music bosses only recently discovered the apparent sample in Madonna's song thanks to new technology designed to identify specific sounds.

VMG Salsoul chiefs are now suing for copyright infringement and demanding unspecified damages.