Lapin Cosaque

 Cossack Rabbit, by Ladislaus Starevich.

https://youtu.be/xV0V3d_pF6E

Starevich was the animation genius who brought us this -

https://youtu.be/ngpOmHO8Hxo 

Miaow, from Le Roman de Renard, 1930.  

 The singer is Jaime Plana, music by Vincent Scotto.

https://misterscribbles.blogspot.com/2019/07/le-roman-de-renard.html