Work Excitement

I work at a string instrument shop near Boston. It's a family-owned business, about 30 years old, with customers all over the US and actually many international dealings (instrument acquisition etc) as well. My job is basically retail, but with a lot more customer service mixed in just by the very nature of the business. It's not like when I worked at Gap and people knew what they wanted and only needed me to take their money. Here they need my advice, too, because they often don't really know much about what they're looking for.
So, I really love it at work (especially since all the people who work there are great). But I've been thinking lately about how there's pretty much no room for advancement. I mean, I'm very lucky to have a job in this economy, especially one that I truly LIKE (and that pays pretty well), but it's definitely not a career. But today something really exciting happened!
I frequently demand that my friend from work read this blog when there's very little customer traffic, and apparently yesterday he mentioned to one of the women who specializes in sheet music that I like to write. So today, she asked me if I would like to write some features on pieces I like or recommend for the catalog! Which I definitely would. I'm so excited about this! It immediately made me feel more valuable, and I know it's something I can do well and sort of prove my worth a little more. Now I'm all revved up and I just want to go home and research sheet music!
This is not to say that this particular job suddenly has potential as a career, but it is exciting to have a new and different responsibility--and something else to add to my resume.