Intone
Part of speech: verb
Definition: To give tone or variety of tone to; to vocalize. To utter with a musical or prolonged note or tone; to speak or recite with singing voice; to chant; as, to intone the church service. To utter a tone; utter a protracted sound.
Chant
Part of speech: verb
Definition: To sing, especially without instruments, and as applied to monophonic and pre-modern music.
Part of speech: noun
Definition: Type of singing done generally without instruments and harmony.
Example sentence: Record stores have whole sections devoted to the chant.