Jeffrey A. Summit, rabbi and ethnomusicologist, recorded the music and spoke to men and women at five Jewish worship communities in Boston, including Reform, Conservative, Orthodox, the Bostoner Hasidim and a "new-age" havurah (fellowship group). His book The Lord's Song in a Strange Land: Music and Identity in Contemporary Jewish Worship (Oxford University Press, 2000) explores cultural and religious identity through an examination of music and prayer in five Boston congregations. The book includes a CD with vibrant examples of the music sung in each of these communities. At the end of the book, he takes a "walk across the street" and shows how Catholics and Protestants are dealing with the same issues as they negotiate the choice of music in Christian worship.