Interesting question XD
My first reaction when a listened her (many years away) was like "mm... i don't like her music". I was so blind then
But I saw a video of one of her concerts and... omg! I was CRYING!! I was so moved and i couldn't explain why. I loved it, and i started to love her.
One day my mother was sitting by my side meanwhile i was watching one of her concerts and her reaction was the same: she was on the verge of tears! And she said "It's amazing how someone like her (a girl so short and skinny from her point of view) can move SO many people! Because there are a lot of people in that concert, and everybody sings and jumps all together with her!". She was very impressed XD