So many people are giving Seohyun crap over her voice cracking in the beginning and Tiffany's getting hate cause she didn't sing her high notes. Everyone has had their voice crack while talking and singing, it happens to everyone. Seohyun bounced right back though. Tiffany is still sick bless her heart, I really hope that whatever she has isn't putting to much of a strain on her vocal chords. Hasn't she already had one major surgery on them in the past? :(