Part of the hell panel of Hieronymous Bosch's triptych, The Garden of Earthly Delights, c. 1500, with two further details depicting bum notes. In the middle we see a sinner's buttocks used as a score by a frog/man hybrid dressed as a church precentor or cantor. (The music, lacking a clef and with no distinct note values, is meaningless.) On the right we see a sinner made to carry a huge bombard/bombard/shawm across his back, while he plays a fife with flatus = flatulence.
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