For example, searching for "electronic music box" as /u/ajnin suggested, with the top 100K web sites removed from the results, filters out the following:
> These 23 sites were removed from your results:
> alibaba.com (1 result removed)
> aliexpress.com (1 result removed)
> allaboutcircuits.com (1 result removed)
> amazon.com (2 result removed)
> apple.com (1 result removed)
> bestreviews.com (1 result removed)
> ebay.com (1 result removed)
> etsy.com (2 result removed)
> facebook.com (1 result removed)
> instructables.com (2 result removed)
> lightinthebox.com (2 result removed)
> lumberjocks.com (1 result removed)
> mapquest.com (1 result removed)
> reverb.com (1 result removed)
> twitter.com (1 result removed)
> wikipedia.org (1 result removed)
> yelp.com (1 result removed)
> youtube.com (2 result removed)
And the top result ends up being https://midiguy.com/.