A bitter row over the takeover of one of the world's most well-known music companies, EMI, has gone to court in New York.
Private equity company Terra Firma, which bought EMI in 2007 for $US6.3 billion, is suing investment bank Citigroup over advice it gave during the purchase process.
Terra Firma founder Guy Hands says Citigroup misled him into offering more money for the music giant than was necessary. The bank denies the allegation.
Citigroup backed the EMI purchase with a $US4 billion loan, but three years on, the recording industry is still in trouble, and EMI is struggling with billions of dollars of debt.