Will.i.am: Downloading has changed the music industry
Will.i.am has been talking to Newsbeat about how digital downloading has changed the face of music.
The rapper says artists don't make that much money from it, but it has become the "barometer of success."
He was talking during the promotional tour of the animated movie Rio 2.
His comments come a week before BBC Radio 1 broadcasts a special download countdown on Easter Monday (21 April).
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