Question: Should I create a website, or can I use social media alone just as effectively to promote my business?
I think that social media can be more effective for promotion than a website. However there is still a need for a website or at least a webpage to further inform potential clients of your product. If faced with having to make a choice however, my answer would be today, in 2018, to primarily use social media. At the very least, an Instagram page or a Facebook music or business page. You have an increased chance of people seeing your page and product on these platforms than by just stumbling across your website.