The Pittsburgh Symphony Orchestra musicians have been protesting since 30 September (16) after management officials unveiled plans to cut their pay by 15 per cent to help ease the company's growing debt.

As a result of the strike, they have pulled out of all shows at Heinz Hall until 18 November (16), and now their fight has been given a boost by Costello, who has refused to hit the stage at their home venue on 1 November (16).

The veteran singer insists he will not cross the picket line and has urged fans to do what they can to "support live music wherever it is heard", according to The Associated Press.

Bosses at the Pittsburgh Symphony Orchestra recently revealed the salary cuts were necessary to keep the company afloat as it faces falling more than $20 million (£16.3 million) into debt over the next five years.