Chanting prayer is a multi-faceted experience.
meaning
intent
sound
vibration
connection to others through tradition
The words, and meaning of a prayer are one facet. And, at any particular time the meaning may sit differently with us than at another time. The intention we bring to the prayer, and our personal expression of it can create a different experience.

The quality of tone—the vibration of our voice—adds another dimension. The vibration itself is cleansing—clearing and invigorating our ki. And this vibration connects us to the kami, to the divine.
There is no right or wrong here—rather, be intentional. And open your senses to experience the connection created by the vibration of your voice. Feel the vibration in your belly—your hara. The seat of the soul. And let it rise within you.