octave
An octave is the most tenacious illusion spawned by music theory. This strange phenomenon, where low and high pitches speak the same voice, is born from the cold cruelty of mathematics colliding with the deceit of art. Performers are entranced by its infinite loop, basking in the feeling of conquering the same summit twice. The ear receives it as both joy and delusion, while reason sighs, 'Here we go again.' And every time tuners align an octave, their patience is tested to its very limits.