Yes, you can operate multiple different types of businesses under the same Limited Liability Company (LLC). Businesses operating under the same LLC do not have to be related. However, there are several factors you should consider:
Liability: The main purpose of an LLC is to protect the owner's personal assets from potential business debts or liabilities. If you have two completely different types of businesses under the same LLC, liabilities from one business could potentially affect the other. For example, if someone sued your software business, your income and assets from the musician gig could be at risk.
Taxes and Accounting: Having different types of businesses under the same LLC could make accounting and taxes more complicated, as you'd have to keep track of expenses and revenues separately for each one.
Brand Perception: Operating unrelated businesses under the same LLC could confuse customers and dilute your brand identity. People might not understand how or why a software business and a musician gig are related.
In your situation, if you want to keep your software and musician business under the same LLC, you may want to consider using a DBA (Doing Business As) for one or both businesses. A DBA allows you to operate a business under a different name without creating a separate LLC.
However, before you make a decision, it's best to consult with a business advisor or attorney who is familiar with the specific laws and regulations in your state. They can help you understand the pros and cons and make the best choice for your specific situation.