Zac Efron's VOICE DOUBLE!
So...is no one gonna talk about how they changed Zac's voice during the karaoke scene??
It starts him singing and when he starts to sing "you're the one who held me up and never let me fall..." until the end of the song it's someone else´s voice. And it quite obvious too. Zac´s voice is a lot more nasal and higher than the other dude´s voice. I just don´t know why they felt the need to do that when Zac has a really pretty voice and would have been able to sing all by himself just fine.