they won't - who said that?
The new law also includes a number of provisions designed to ensure that musicians see a fair proportion of the extra income, including a fund for musicians who signed away their rights when a recording was made.
The fund will be financed by record labels, who put aside a percentage of the benefits they get from the prolonged copyright.
From the article in the OP.
I was trying to find a link for the actual EU directive which I was perusing earlier but gave up on Google. It says the same thing though.
I'm All Ears.