Syesha Mercado sang “Yesterday” on American Idol 7 Top 11 Performance Show (Beatles Night Part 2). Randy Jackson said, “In my estimation, very, very, very good performance tonight.” Paula Abdul said, “I have to tell you that vulnerability is really where you need to be.” Simon Cowell said, “I thought that was probably your best performance so far.” Critics agree this one's the best of the night! Watch the video and see Syesha's new look after the jump...