"Because I’m terrified of it," Leo whispered.
It split. A jagged, ugly fracture in the sound. A dry, breathy croak followed by a thin, reedy squeak. The "Dys Vocal Crack." He knew the clinical term: a sudden, involuntary loss of coordinated adduction. But the slang was more accurate. It was a dysfunction. A betrayal.
The crack still happened. But it was different. It wasn't a collapse. It was a texture. A splinter of real, ragged sound. He rode the squeak and pulled it down into the next note, turning the glitch into a bend.
Louder this time. A sound like stepping on a dry twig. The guitarist behind him shifted his weight. Leo felt heat bloom across his cheeks. It wasn't stage fright. It was physical. A rogue muscle in his vocal fold, spasming like a faulty piston.