It's not her 4th single, it's her 4th single to pass the 100,000,000 Youtube views mark.
Just Dance, Telephone and Bad Romance already passed the mark.
"Music had become an art of sheer agreeableness. But the beautiful in literature is not the best part. To the earnest thinker, the seeker after truth, the student who looks for illumination on life's problem, beauty in itself is insufficient".