[Verse 1] In the embryonic chamber, paired pathways form Left and right aortic arches, mirrored in the storm Fourth arch on the left side claims its destined throne While the right retreats in shadows, leaves the left alone [Chorus] Left fourth stays, right fourth fades That's the normal cardiac parade But when the script gets rearranged Right persists, left gets estranged Conotruncal chaos follows near When the wrong arch volunteers [Verse 2] Picture twin highways branching from the beating core Evolution chose the left lane, closed the right-side door But nature sometimes stutters, picks the mirror twin Right aortic arch ascending brings the trouble in [Chorus] Left fourth stays, right fourth fades That's the normal cardiac parade But when the script gets rearranged Right persists, left gets estranged Conotruncal chaos follows near When the wrong arch volunteers [Bridge] Truncus arteriosus lurking in the wings Right-sided arches herald what destruction brings The partnership is poison, marked by strong connection Developmental rebellion breeds cardiovascular defection [Verse 3] Symmetry's illusion crumbles in the chest Mirror-image plumbing puts the heart to test When the wrong arch conquers, malformation's price Conotruncal syndromes roll the loaded dice [Chorus] Left fourth stays, right fourth fades That's the normal cardiac parade But when the script gets rearranged Right persists, left gets estranged Conotruncal chaos follows near When the wrong arch volunteers [Outro] Remember arch selection shapes the cardiac fate Left is liberation, right seals truncal fate
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