One of the musical structures we must teach our students is that of phrasing, or what Lerdahl & Jackendoff refer to as grouping. Basic to musical phrases is the concept of antecedent and consequent phrases. Antecedent phrases are complete phrases that end on a pitch of relative instability or tension, resulting in the listener expecting continuation, even after the performer takes a brief pause or breath. Consequent phrases are also complete phrases, but they end on a pitch of relative stability or relaxation, resulting in the listener recognizing the conclusion of the musical thought. Themes, sections, movements and works end on consequent phrases. Very often, consequent phrases end on the tonic, and antecedent phrases end on the dominant. Because antecedent or consequent phrases are defined primarily by the harmonic function of the last note, they are most effectively taught by holding rhythm constant while giving students creative license with pitch. The only stipulation is that the consequent phrase must end on the tonic. It is also possible that students can use elaborative notes in the consequent phrase. Take the melody “Mary Had A Little Lamb” as an example.
Structurally, the first line is a reduction of the second. The quarter notes on beats 3 and 4 of the second measure of the second line reduce to one half note in the first line, and the quarter note on beat 3 of the third measure in the second line is an upper neighbor tone that is omitted in the reduction, in which a half note on D occurs. The last measure of the first line could be reduced further to a whole note on G, the dominant. In its reduced form, the second line is identical to the first except for the last note; the antecedent ends on the dominant and the consequent ends on the tonic. Students can be given the first line, with the further reduced last measure, and then asked to write a consequent phrase ending on the tonic pitch. They would be at liberty to write any diatonic pitches, but to maintain the rhythm of the first line exactly. One possible solution is given below.
Prior learning will include voice leading, analysis of stylistic elements, and skill at audiating so that students do not write down random notes, or notes that are stylistically incompatible with the antecedent phrase provided. Doing this activity with antecedent phrases of different styles and genres provides the opportunity for students to learn about and compare each style or genre represented. Assessment would include ending on the tonic, maintaining the same rhythm preserving the same style, using diatonic pitches, and observing good voice leading. If student work is handwritten, assessment could also include accurate forming of note heads, stems, measures, clef, and time signature, and the correct number of beats in each measure. Students who do the work on music notation software should nevertheless be asked to demonstrate understanding of notation conventions such as correct length and direction of note stems, and of the metrical arrangement of notes within measures. Technology should never allow students to bypass the learning of concepts.
A great deal of learning can result form this one activity. Phrase structure, style, genre, and notation are all closely related issues in music. This activity fosters an efficient use of time because all of these can be addressed at once in a practical, relevant way; students need to know about and apply their knowledge of style, genre and music notation in order to gain a deep understanding of the target concept, that of antecedent and consequent phrases.