In a declaration letter, UMG's CEO was particularly blunt in describing Drake's legal moves as "groundless and indeed ridiculous," and also revealed that the company had spent "hundreds of millions" supporting the Canadian rapper.

In new legal filings, the top executive has made his first public statements on the rapper's unprecedented lawsuit against his own label

In a declaration letter filed Thursday night in the Southern District of New York, Grainge said Drake's accusation that UMG (parent label firm to both Drake and Lamar) defamed him "makes no sense."