I don't know much about the outputs of the British animation studio Halas & Batchelor (which was run by a husband-and-wife team John Halas and Joy Batchelor), but I came across this short the other day and I had to share it.
There's a joy in this cartoon. The designs are clean and simple and the animation is bouncy and fun. The elephant is an appealing character and the jazz music fits the mood very well.
Like I said, I'm not too familiar with Halas & Batchelor so I'll just link it here.