We all know she has a high voice and she can sing all these massively difficult songs that she made herself, but I just adore this song, and I think it's brilliant.
Her vocals are not as thin on this song, and the chorus is massively catchy. That plus the fact that the song is just amazing, the melody's so freakin' catchy that I could hum the chorus after maybe two listens.
Now that is part of the formula for the perfect pop song. Can people sing along to it on the street and will they be able to keep it stuck in their heads long enough to buy the single?
That's the case with this song, and that's why it's one of my favorite songs of the year.