A joyful mind is very ordinary and relaxed... When your aspiration is to lighten up, you begin to have a sense of humor. Things just keep popping your serious state of mind. In addition to a sense of humor, a basic support for a joyful mind is curiosity, paying attention, taking an interest in the world around you... Noticing everything. Appreciate everything, including the ordinary. That's how to click in with JOYfulness.
To listen to music or to sing a chant is to do something that has no practical purpose; it is just celebration and praise; it is just tasting the joy and beauty of life, the glory of God. Listening to it, even in the midst of a very purposeful day, reminds us to add the other dimension to our experience, the dimension of meaning, that makes it all worthwhile.