monodize
/mɑːˈnɒdaɪz/Definitions
1. verb
to treat or represent a single, often isolated, aspect or element, such as a melody or a theme, as if it were the only one; to render as a monody
“The composer tried to monodize the complex symphony into a single, haunting melody.”
2. verb
to make or become monotonous or unvaried in tone, pitch, or quality
“The singer’s voice began to monodize as she repeated the same phrase over and over again.”