This Chorus has Ended

At twelve years my Voice dropped off a cliff;
   Soprano plunged to Alto.
High C cracked as the suicide claimed
   my beautiful Hallelujahs.

A final note forged by Puberty's hand:
   This chorus for us has ended.
In sorrow, my Range sharply fenced in its scale.
   Now,
       like a cow,
                   I low.