noteOn()

Start a pitch sounding, and leave it sounding.

Play.noteOn(pitch)

The note keeps playing until you stop it with Play.noteOff().

Parameters

Play.noteOn(pitch, velocity=100, channel=0, panning=-1)

Parameter	Type	Default	Description
pitch	int or float	required	A MIDI pitch from 0 to 127, or a frequency in hertz (8.17 to 12600.0) to reach pitches between the standard notes.
velocity	int	100	How loud the note is, from 0 to 127.
channel	int	0	The channel to play on, from 0 to 15.
panning	int	-1	Stereo position from 0 (left) to 127 (right); -1 uses the global panning.