Bieber is back and better than ever.It's been almost a year sinceJustin Bieberannouncedonstage with Ariana Grande at Coachellathat he will be returning to music after his hiatus, and on Friday, he delivered a Valentine's Day gift in the form ofChanges.Changes, which follows 2015'sPurpose, quite literally represents the "changes" in Bieber's life over the past five years.