12 beautiful intermediate-level arrangements, Jesu, Joy of Man's Desiring * Joy to the World * Rejoice! (Good Christian Men, Rejoice) * Go, Tell It on the Mountain * and more.
Books can be attributed to "Anonymous" for several reasons:
* They are officially published under that name * They are traditional stories not attributed to a specific author * They are religious texts not generally attributed to a specific author
Books whose authorship is merely uncertain should be attributed to Unknown.