Digital music sales totaled $5.2 billion in 2011, up from $4.8 billion in 2010, according to the IFPI, a trade group that represents 1,400 music companies worldwide. Digital music sales totaled $5.2 billion in 2011, up from $4.8 billion in 2010, according to the IFPI, a trade group that represents 1,400 music companies worldwide.
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