Seems like this isn't an issue at the SPARQL endpoint, but at least in the "latest" dump the prefixes are "mid" throughout, whereas the SPARQL documentation refers to "midi". Not a big deal, but might be good to make a note of this in the documentation.
There are also a couple other discrepancies between the documentation and "latest", e.g. "mid:tick" as opposed to "midi:tickOffset".
Seems like this isn't an issue at the SPARQL endpoint, but at least in the "latest" dump the prefixes are "mid" throughout, whereas the SPARQL documentation refers to "midi". Not a big deal, but might be good to make a note of this in the documentation.
There are also a couple other discrepancies between the documentation and "latest", e.g. "mid:tick" as opposed to "midi:tickOffset".