Live is about doing many different things. I do believe you'll have to decide which of these you do full-time, because each has a tendency to bleed over into non-traditional work hours. Once you decide which you do for a living, and which you do to fulfill yourself, then you can work out a balance between them and the rest of your life too.
Remember what John Lennon said, "Life is what happens when you're busy making other plans." Don't be surprised if you choose one and then the other chooses you. ;)
Go with your heart and you can't go wrong.
Try to use your college years to take courses in both majors. It's easy enough to do. I nearly minored in both Music and Psychology by taking classes that overlapped them both.
Talk to people in those fields and see what their daily lives are like. That could help you see which fits more with your dreams and aspirations.
Either way, your an artist and there is no limit to what you can do.
Judeanne recommends the following next steps:
- Talk to potential colleges about classes in both design and music majors.
- Speak to Musicians and Interior Designers about their everyday work life to see what fits for you.
- Never believed that you are meant to do just one thing, or just one or another of two things. Life is limitless and so are you.