Plus, will Shakira bounce back from second-week disappointment?
While 'Frozen' continues to dominate. the EDM producer hopes to capitalize on surprise new album
"This is just taking it to the max of short song length and extremely high volumes of play," says Vulfpeck's Jack Stratton of 'Sleepify'
Soundtrack becomes first album in 2014 to sell 1 million copies
The 'Frozen' juggernaut also continues to roll
The Oscar-winning "Let It Go" took months to develop, and that was all part of the plan
Beck also makes Top 5 debut with subdued 'Morning Phase'
Finding good news in a sea of bad
Industry insiders look to song identification app as new measure of success
Imagine Dragons, Miley Cyrus also get bump from iTunes discount
New law stripping artists of right to refuse remixes and samples is only in review stage, officials contend
But 2014 music sales are still slumping
With the industry shifting from download sales to streaming music, artists find new value online
But 2014 still lacks a new hit
Lorde, Kendrick Lamar and Chicago also gain