NOW 54Released in May 2015, Now That's What I Call Music, Vol. 54 offers up the year's second batch of pop hits with a slew of singles from late 2014 and the early part of 2015. As usual, there are some pop chart heavyweights here like Taylor Swift's "Blank Space," a song that knocked her own "Shake It Off" out of the number one Billboard spot. Elsewhere, Kelly Clarkson returns with the far too catchy "Heartbeat Song" and Fall Out Boy cement their career