Using H-tags is not a waste of time. Apart from being an excellent instrument to supply releveant headers and sub-headers, Google does take note. Just not to the degree that tags did years ago. H-tags are now one of the 500+ factors, so NO single factor is of crucial importance.
Apart from that, if H-tags don't correspond with the text in that subsection, chances are that neither Google nor your readers will like it.
Add all the above up, and you come to an outcome where there simply is no benefit in making a song and a dance around H-tags to try to artificially squeeze a bit of extra seo juice out of them.
If, on the other hand, you write a truely helpful and informative page about one sub-subject, spread over 4-6 logically following sections (most important one first) and you use H1 to H4 (or 5 or 6) as an indicator what that section is about, you are more likely to get the appreciation of both Google and your readers.
This is then also more likely to be quoted and re-posted by people with references to your site. Those links are likely to be on relevant sites, with natural anchor text, and those are the kind of links Google DO look at.
For example: your page about African drums can be more structured and each section can have a H-tag describing that section e.g. H1:African drums (NOT dumdoctor) H2 African hand drums, H3 African stick drums, H4 African mixed drums
That way, the whole page is about African drums, the contenst is about them, and the H-tags match it.
If I were a search engine algorithm and found 10 pages with the same Drum Doctor H1 tag and those pages had no text relevant to "doctor" I would start ringing the spam-bell and push the blackhat-alarm button.
What a lot of people forget, is that Google is one of the richest companies in the world, hiring the best talent that money can buy in this world, and a significant part of that best talent in the world does nothing else than designing algorithms that eliminate the efforts of people that try to bypass their algorithms to gain undue prominence in the serps.
Your site isn't bad, but in terms of drum information, there is room for a lot of extension and improvement. I'm not saying that to "put you in your place", but to encourage you to put a lot more structured info on your site, tart it up with a host of relevant pictures, and gain Google love that way.
Not only will more info + better info raise your ranking in the serps, it will also gain appreciation from visitors and build your trust and authority levels, which will raise your ranking, which will lead to more vistiors, which...... and so on.
To misquote Edison: 1% rocket science and 99% effin hard work.
Forgot to mention: you can gain a little bit of seo juice and make your site look better by optimising your images.
You may want to invest 10 bucks in David Amerland's 20 atep seo help book, you'll love it.