Zak has decided to play harmonica in today's Big Zing but he can't play harmonica and sing at the same time. Both Panzee and Tang want to be the lead singer and so to help him decide who it should be DJ Loose suggests they hold an audition. Zak thinks a competition to find the best singer is a great idea. Drum, Zak and DJ are the judges while Todd hosts the auditions. Panzee sings brilliantly but her audition is interrupted by Tang making a loud honking sound with his hooter. When it's Tang's turn to audition Panzee gets her own back by blowing really hard on a tuba halfway through Tang's song. Zak thinks they were both great and still can't decide. DJ suggests he has some quiet time to help think it over. Zak's time is all but quiet though with the Beach Byrds demanding to be picked, the Moaning Stones singing their audition song and Todd squawking his audition piece. As Zak tries to find somewhere quiet to hide he bumps into Tang who begs Zak to pick him. Zak accidentally says yes to Tang and then does the same thing to Panzee when she begs him. As they try and rehearse the Big Zing they realise Zak has made promises to them both. Panzee and Tang are not happy and both declare that unless they can sing the Big Zing there will be no Big Zing...