Musicam sacram is the title of an instruction on Roman Catholic sacred music issued by the Sacred Congregation of Rites on 5 March 1967 in conjunction with the Second Vatican Council.[1] The instruction deals with the form and nature of worship music within the framework of Sacrosanctum concilium.[2] According to the document, it is not a collection of "all the legislation on sacred music; it only establishes the principal norms which seem to be more necessary for our own day."[3]