I have two thoughts about your problem.
1. I know your question is about engaging content, but the root of your problem is totally different: you don't have an audience. You can have regular and fresh content, but if you don't have a steady stream of users in your niche, then the content is useless.
Are you known in the drumming niche? Do you regularly participate in drumming circles, have a following or are building up a following, in the drumming world?
2. If you insist on using engaging content to build your audience (which is a totally valid strategy), then your content must be best-in-class. What I mean by this is that: you need to offer definitive, authoritative, or comprehensive content that nobody else matches. Google and search engines will then drive users to you.
But if your content is nothing more than open-ended discussions that you can find anywhere else, you're awash in a sea of mediocrity.
I'm not really a drummer, so I'm pulling ideas out of the air, but you could build informational databases such as drum cadences, drum exercises, drum techniques, drum equipment, vendors that sell drum sets, etc.