Spotify looked to the number of streams on its service for clues, and also had mixed success.
It spent seven non-consecutive weeks at No 1 in the UK, and set a new record for the number of streams.
The UK music industry saw the number of streams almost double to 27m and physical sales, while flat, were greater than they have been for a decade.
The digital revolution was also felt in the UK music industry where the number of streams rose a staggering 82% year-on-year to 26.8m.
The company said music licensing fees are its largest expense, the royalties paid to the copyright owners of based on the number of streams played.
Sites continue to disagree about the legitimacy of "autoplay," a setting that starts videos automatically when a Web page loads, increasing the number of streams without necessarily knowing that the Web user is watching.
Among the more significant decisions was one reducing the number of streams that would be designated as critical habitat for the endangered bull trout and protected from commercial use.
Earlier this year, we asked Spotify to take a look at the Glastonbury lineup and reorder it, as if the bands were going to appear in order of the number of streams each act had received.
The number of streams on six of the biggest services rose to 494 million in the week ending March 4, from 300 million a week at the start of the year, according to Nielsen Broadcast Data Systems.
It refers to the number of streams per unit area.
It is the ratio of the number of streams of any order to the number of streams in the next lower order (Horton, 1932).
