Music and theatre scholars studying the history and anthropology of Semitic and early Judeo-Christian culture have discovered common links in theatrical and musical activity between the classical cultures of the Hebrews and those of later Greeks and Romans. The common area of performance is found in a "social phenomenon called litany," a form of prayer consisting of a series of invocations or supplications. The "Journal of Religion and Theatre" notes that among the earliest forms of litany, "Hebrew litany was accompanied by a rich musical tradition:"