I've found https://www.instructables.com/id/Play-Music-on-Arduino-and-TFT-Touch-Screen/. This sketch is modified to use it with the MCUFRIEND_kbv library. You only have to install the needed library in the Arduino IDE. So open the IDE, select Sketch -> Include Library -> Manage Libraries. A new window open. Search for MCUFRIEND_kbv library and install it. The same procedure for the Adafruit GFX Library. Now download the sketch, unzip it and open it in the IDE. Plug the buzzer to gnd and A5. I've used two thin wire connected to the buzzer, strip the insulation at the ends. Now plug the cable in and also plug the display to the Uno. Upload the sketch and have fun.