The Cunctator wrote:
In all seriousness, I think the policy should be that any special knowledge needed to understand the article should be included somewhere in Wikipedia. For example, the above knowledge is included at [[key signature]] and at [[E-flat major]].
Thus if the example article read
"The [[key (music)|key]] of the score is [[E-flat major]]<ref>[link to score]</ref>..."
Any person with the knowledge contained at those links would be able to understand the reference.
That's perfectly sensible. Instead some people are intent on reinventing the wheels that they are already spinning too fast to see.
It is pointless to keep proving these repeatedly when the matter has already been properly considered in a more general article. Just link to the article where it's already done.
Ec