Roman Catholic liturgy, like that of many of the more liturgical churches, features texts that are sung in each liturgy or service. These are called ordinary texts. Often these texts are sung. Settings of these texts, and other frequently used texts, are called service music or liturgical music. This music is part of the liturgy itself, not something that interrupts or is added to the liturgy. Since the Second Vatican Council in the early 1960s, Catholic churches have had more freedom in choosing service music. This has resulted in vast numbers of new compositions, many of which are valuable for churches in many worship traditions.