There are no keys to press, but you have to watch the WHOLE thing, cuz there is something at the end...
This a FNaF song (by MandoPony), and as you can see, this is a Warrior cat's version of FNaF. These are the characters in Warriors that play the original animatronics, Firestar as Freddy, Graystripe as Bonnie, Sandstorm as Chica and Ravenpaw as Foxy.