Your first gig starts now.
The microphone works with any acoustic or digital piano: put the computer near it, play a few notes, and check they show up here.
On a phone or tablet, tap the keys on screen to try it out.No piano? Use your computer keyboard: A W S E D F T G Y H U J K = C to C, Z/X shift octave, Space = Spotlight.
You'll hear 16 clicks. Tap any piano key exactly on each click. Listen, don't watch.
Using the microphone: wear headphones for this so it hears only your piano, not the clicks.