Niall Stanage There are fears that the $7.3 million decision on complex musical issues may open the door to opportunistic lawsuits

The global music business is this weekend grappling with the implications of a verdict delivered in an American courtroom last week.

At issue is whether the singer Robin Thicke, along with the producer, singer and songwriter Pharrell Williams, perpetrated a creative theft on Marvin Gaye.

Thicke had a huge hit in 2013 with Blurred Lines, which he is credited with co-writing with Williams and the rapper TI.

Gaye’s descendants argued that Blurred Lines plagiarised the legendary soul artist’s 1977 song Got to Give it Up and that they, therefore, should have profited from it. ...