Within the span of one year , as a result of heroin use , and the deepening of his voice to a baritone as a result of going through puberty .
Lymon 's slowly declining sales fell sharply in the early 1960s .
Within the span of one year , as a result of heroin use , and the deepening of Lymon 's voice to a baritone as a result of going through puberty .
Lymon 's slowly declining sales fell sharply in the early 1960s .