An illustration, in early twentieth-century style, of four pairs of legs dressed in marching band attire, with exposed buttocks. Torsos are absent, and upon the bottoms are placed marching band hats. Between each pair of buttocks is inserted a brass instrument. On the bottom of the image is a caption in cursive print. The caption reads, "The ass band will play a song of farts to celebrate your failure."
there's no flute, but is this what you meant?
https://i.imgur.io/zrIcGo2_d.webp
Oh my god, it is!
I've seen that with some medieval music and animated, but that is exactly it.
I love you so much right now
fwiw I just typed centaur lute butt face flute into Google and then found the first non-r🤮ddit link
butt flute
https://housecapuchin3.files.wordpress.com/2020/01/giphy.gif?w=300