Please explain your setup;
MIDI Out of keyboard goes to computer?
Sound (audio) out of computer is what you hear?

How is your keyboard connected, and what is the path of the actual sound (audio) that you hear?
Is the Keyboard connected to the computer via USB, and your monitors (whether headphones/speakers) comes through the computer .. or?

There are lots of places this signal flow could change direction, so we need to know the specifics to help.
Do you hear a piano only while actually playing the keyboard, or does it also happen after you record a track and play it back?

Lots of questions, and knowing how things are wired will help others to give accurate suggestions.

Last edited by rharv; 01/08/19 03:48 PM.
Make your sound your own!
.. I do not work here, but the benefits are still awesome