Assertion: hertz | /r/CreatedBy | a♭
Facets:
Source sentences:
text: In the period instrument movement, a consensus has arisen around a modern baroque pitch of 415 Hz (with 440 Hz corresponding to A♯), a 'baroque' pitch for some special church music (in particular, some German church music, e.g. the Pre-Leipzig period cantatas of Bach) known as (Chorton pitch) at 466 Hz (with 440 Hz corresponding to A♭), and classical pitch at 430 Hz.