Definition of "key-tone" []

• Same as key-note, 1. (noun)

The Century Dictionary (Public Domain)

• "First tier multiplex theaters in Beijing have been marketing “Shrek the Third” as the key-tone film for the second half of August."
• "Tonic keys are therefore those having the same key-tone."
• "This change was made because the development of writing music in several parts (particularly _harmonic_ part-writing) made necessary a "leading tone," _i. e._, a tone with a strong tendency to move on up to the key-tone as a closing point."