K.K. Birthday
From Nookipedia, the Animal Crossing wiki
"K.K. Birthday" is a K.K. Slider song that first appeared in Template:AFe+ and later reappeared in Animal Crossing: New Leaf. The cover is a picture of a birthday cake with K.K. and Tangy on the top. It can only be requested and obtained on or around the player's birthday. It is not obtainable in Dōbutsu no Mori e+, but it is performed only by K.K. Slider. None of the villagers own this song. Template:PrCo