We don't get many good original soundtracks very often these days, so 2016 was really a nice breath of fresh air.
From 'La La Land'...
...to 'Sing Street'...
...to 'Swiss Army Man'...
...to Moana...
...and I'm sure there are more that I'm either forgetting or that I just don't know of.
I honestly can't remember the last time we had so many great ones in one year.
EDIT: To clarify, I'm talking about original soundtracks (songs with vocals), not scores. We get great original scores every year. Great soundtracks are far more rare.