Casio Casiotone CT-S500 User Manual page 186

7.
Press and release a keyboard key.
The sound will stop when you release the keyboard key.
8.
Press NOTE OFF again to return the keyboard setting to continue producing
sound when keyboard keys are released.
This causes "NOTE OFF" to disappear from the display.
• The sound also stops when you release the keyboard key in the case of a looped sound (page
EN-186).
Recording and Playing the Sounds You Want (Sampling)
EN-185