cF
From TidalCycles userbase
cF uses floating point values from state, such as that from MIDI or OSC controller input.
The first parameter is the default value, for when tidal hasn't received that control. The second parameter is the CC Number of the controller.
Type: cF :: Double f => String s => Pattern Double f
d1 $ sound "bd*16" # djf (cF 0.5 "42")
In recent versions of Tidal, the mininotation allows to write the same statement as:
d1 $ sound "bd*16" # djf ("^42")