Classical music voice teachers or from completion of a formal program offered by a Conservatory, college or university, such as a Bachelor of Music or Master of Music degree (which includes individual lessons from professors). In classical music, "...extensive formal music education and training, often to postgraduate [Master's degree] level" is required. Performance of classical music repertoire requires a proficiency in sight-reading and ensemble playing, harmonic principles, strong ear training (to correct and adjust pitches by ear), knowledge of performance practice (e.g., Baroque ornamentation), and a familiarity with the style/musical idiom expected for a given composer or musical work (e.g., a Brahms
Music for the Requiem Mass the actual Roman Catholic liturgy, are often composed as one movement. Musico-thematic relationships among movements within a Requiem can be found as well. Beginning in the 18th century and continuing through the 19th, many composers wrote what are effectively concert works, which by virtue of employing forces too large, or lasting such a considerable duration, prevent them being readily used in an ordinary funeral service; the requiems of Gossec, Berlioz, Verdi, and Dvořák are essentially dramatic concert oratorios. A counter-reaction to this tendency came from the Cecilian movement, which recommended restrained accompaniment for liturgical music, and frowned upon the use