Music That Sounds The Same Backward

A crab canon is a musical piece that remains identical even when played in reverse. Just like a linguistic palindrome, the melody unfolds forward and backward at the same time.

The term comes from the folk belief that crabs walk backward, mimicking how one melodic line mirrors its own reflection. These compositions require intense mathematical precision from the composer. Famous masters like J.S. Bach even experimented with turning these scores upside down to create haunting, inverted layers. It remains one of the most clever ways to weave logic directly into art.