July 3, 2009
Author's Response:
Okay, the out of sync I can understand. I mean, I'm still fairly amateur at acapella work, but the internet has generally agreed that voice cracking is when your voice alternates between an 'adult' pitch and a much higher pitch in the middle of sentences. I can't find find any of that here. As for your first point, I think that's moot, because an acapella piece consists of only vocals.