Equal Temperament Pitch/Frequency Chart
A keyboard based pitch to frequency chart provided by McNeil Johnston Orchestrations.

Master Piano Technicians
Provides information including mission statement of the organization, history, events, contact details, and member pages.

Piano Technician Homepage
Discusses piano maintenance, purchasing, pricing and general questions. Includes MP3 piano music files by the webmaster.

The Australasian Piano Tuners and Technicians Association (APTTA)
Consists of branch associations in WA, SA, Vic, NSW, QLD and New Zealand with a combined membership of over 300 piano technicians. Conventions are held every two years.