Perhaps the question is more along the lines of "if you have a passion in life, how important is it for your SO to be in tune with that passion?" That is, I can see that music is your passion so it is important that your SO be in support of that, whereas others have different passions. Regardless of what your exact passion is, I think its important to have a SO that supports it. I don't know if there are a lot of relationships out there that would last a long time if one person was passionate about something that made up a big chunk of their life, but the SO couldn't care less.