Answer: Por ti Volare
This is a very beautiful song sung originally by Andrea Bocelli.
Andrea Bocelli is an Italian Opera Tenor who was born in Tuscany, Italy. Bocelli was diagnosed with Glaucoma at a very young age and lost his vision completely at the age of 12 after an accident while playing soccer.
Brennan is forced to begin singing after the Billy Joel '80s Cover Band is kicked off the stage for yelling at fans for making requests.
Dale, Robert and Brennan begin to discuss the possibility of reuniting Prestige Worldwide, which is Brennan and Dale's band. Robert gives a moving speech about his father telling him he can't be a dinosaur and the boys use this as motivation. Dale begins playing, but Brennan comes to Dale's rescue and sings beautifully, thus saving the Catalina Wine Mixer.
Robert to Dale and Brennan trying to motivate the boys: "When I was a kid, when I was a little boy, I always wanted to be a dinosaur, I wanted to be a Tyrannosaurus Rex more than anything in the world, I made my arms short and I roamed the back yard, I chased the neighborhood cats, I growled and I roared, everybody knew me and was afraid of me, and one day my dad said 'Bobby you are 17, it's time to throw childish things aside' and I said 'OK Pop', but he didn't really say that he said that 'Stop being a dinosaur and get a job.'"