The muscle responsible for falsetto voice of puber phonia is
Cricothyroid is the main tensor responsible for the falsetto voice in puberphonia. There is hyperkinetic function and spasm of cricothyroid muscle. Ref:- TB of ENT Hazarika; pg num:- 636
Vocalis
Thyroarytenoid
Posterior cricoarytenoid
Cricothyroid
Larynx