Arduino Nano + WIndows Phone 8.1 application

Hi. I'm using Arduino Nano and Windows Phone 8.1 application, and connect them by means of HT-05 Bluetooth module for my project. In the application I have the button, which makes some noise(e.g. alarm). To be honest, I'm not familiar with Arduino completely, so the question is: is it possible to write a program, which will make the button on the application be pressed automatically, so that the alarm is played?

Thank you.