Can I not go to my college...?

Here's the deal. I sing Opera and I'm top notch Soprano at my community college and would do anything for music. I've been singing all my life, been in so many programs and choirs and have been taking singing lessons for years. I flew out to New Jersey last December to apply to Westminster College in Princeton, NJ (this school is private, population of 70 students, and is connected to Princeton and if I got accepted I would be a Princeton student as well.) I did a private audition and blew the judges away, saying they would do "anything" to have me as a student and am the best singer they've heard in a long time. After the audition I flew back home waiting for my acceptance letter. I got my letter 1 week later saying they accepted me and offering my $21,000 scholarship towards my tuition. Although the tuition is $40,000 a year, I still need $19,000. The school said they don't give full ride scholarships and the scholarship I got is the best. I called the school many times for financial aid or loans and they said they do not offer anything more than my scholarship and that I can look into bank loans. If I got a government loan I need to co-sign with my parents, but we keep getting denied cause my parents "make too much money." My parents can't pay out of their pocket cause they "Have too many expensive bills to pay." But bank loans interest are SO HIGH! I don't know if I'm getting myself into something I will regret and be in debt for life. But this is a once in a lifetime opportunity and all my professional teachers are saying I can honestly get famous for this for how talented I am...but the financial problem is such a pain. My parents are conservative, so they said if I can't go to Princeton I need to move out and live on my own and work up in a restaurant somehow. I need to go to this school but money is such a problem, I'm stuck. WHAT SHOULD I DO? IS THERE ANY ALTERNATIVES?