Retirement tax questions

Is the band a partnership?  Or a bunch of independent contractors who sometimes hang out.  If you are a partnership, that is a specific type of business and needs a specific type of tax return, even if it is not registered as a specific business structure (like an LLC or a corporation).  The income and expenses go to the partnership and the pass-through income is reported on K-1 statements.  You may want to discuss your situation with an accountant.