Such a dull task a bot is better fit for.

https://musicbrainz.org/relationship/6ba2f0b3-90c5-471a-9bde-79d0612d023d
https://musicbrainz.org/relationship/acad5736-9426-4b97-a660-33a5f8e83b28

As of 2021-05-08 there are ca. 5,000 such relationships left:
https://musicbrainz.org/statistics/timeline/count.ar.links.l_artist_release.piano%20technician
https://musicbrainz.org/statistics/timeline/count.ar.links.l_artist_recording.piano%20technician