EARFQUAKE
Earfquake is a catchy pop song very far from the raw sound of Igor's Theme and Tyler's old works. In fact, It was originally written for Justin Bieber but He refused it. Therefore, Tyler tried to get Rihanna to sing the chorus but He was turned down again. At last, He decided to keep his raw vocals pitched in the song's chorus. This is an interesting musical choice but It is also relevant of the LP's story.
The song serves as an introduction to the "pink side" of Igor's story. The pitched voice symbolizes the singer's mind lost in his love for another person, in contrast with Tyler's original deep tone. A feeling which is also already at risk in this first act as he states in the chorus.