The default behaviour is to fallback to the network DNS if DoH doesn't resolve the domain, so your use case would work fine. archive.is didn't work for Cloudfl

The default behaviour is to fallback to the network DNS if DoH doesn't resolve the domain, so your use case would work fine. archive.is didn't work for Cloudflare users because they purposely sabotaged the results for Cloudflare (they did actually return valid, but wrong, results). EDIT: Although you might have a problem if the owners of the ".music" TLD decide to put something else there.