The purpose of the study was to design and evaluate materials for integrating musical concepts and stylistic concepts into the high school choral rehearsal. Need for the study was established by examining related literature and by means of a survey of Texas high school choral directors. A systems approach model of curriculum development, consisting of a ten-step procedural outline, was adopted for formulation of the study. The following criteria for the curriculum, called Integrated Musical Information for Choirs (IMIC), were set: (1) Materials should be in the hands of each student; (2) Materials would relate directly to music being performed by the choir; (3) Use of the materials should assist the teacher in organizing his/her work; (4) Teachers should be able to put materials into use without adaptation; (5) Teachers' out-of-class preparation should be minimal.