How do you unlock K.K. Slider in Animal Crossing: New Horizons? This character is a Dog who players the guitar, and is considered a celebrity among villagers. You can even purchase his songs through Nook Shopping and play them using different devices.
In order to unlock K.K. Slider, you'll have to complete Project K. This is a series of tasks that you'll need to do which is requested by Tom Nook in order for you to improve the Island image so that K.K. Slider will come to perform. We have created a page dedicated to this, so please check our following guide:
Animal Crossing Island Progress Guide (Project K)
Once you have completed Project K, K.K. Slider will now appear at the plaza every Saturday evening onward.
We have questions and answers related to this topic which may also help you: