Streaming is now the US music industry's biggest revenue stream. Streaming platforms like Spotify and Apple Music raked in $2.4 billion in 2015, as shown by the RIAA, who released its report on the state of the US music industry in 2015, showing that streaming has edged out digital sales.

"In 2015, digital music subscription services reached new all-time highs, generating more than $1 billion in revenues for the first time, and averaging nearly 11 million paid subscriptions for the year," RIAA CEO Cary Sherman said in a memo sent out with the report. "Heading into 2016, the number of subscriptions swelled even higher — more than 13 million by the end of December — holding great promise for this year."

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