Pursuant to https://community.metabrainz.org/t/tour-staff-relationships/357083, I'm creating a series of relationships for common touring support relationships.
An instrument technician (or "tech") is a staff member who sets up and maintains a particular artist's equipment the way that artist uses it. Occasionally the role extends to operating effects on said instrument, e.g. wah-wah pedals.
Examples:
Paul Bassett is the drum tech for Eric Singer