New research suggests that the removal of DRM protection from music in boosts music sales - years after it was originally implemented with the aim of tackling piracy.

Torrent Freak reports the news from a study conducted at the University of Toronto that compared sales of nearly 6,000 albums from 634 artists at (previous) four major labels before and after the removal of DRM. The study controlled for factors including album release date, music genre and regular sales variations over ...