Much of the slump was down to "particularly poor" sales in the last two weeks of March, according to UK music industry body the British Phonographic Industry (BPI).

BBC: NEWS | Entertainment | Top albums fail to stop sales dip

Its business is tied to the strength of the U.S. housing market, which has been coming to life after a multiyear slump that dragged down prices and kept buyers from the market.

WSJ: Trulia Soars 41% in Debut

This drove share prices down 8% in the first two hours of trading on January 29th, continuing a slump that has brought the Russian stockmarket down by about 30% since the new year.

ECONOMIST: Russia fights a run