Modal dictation: B-flat or B natural?
In a 2-period complementary Music class, the department trials a 12-mark melodic dictation. The teacher plays an 8-bar melody twice at crotchet = 92: 4/4, beginning and ending on D4, using D, E, F, G, A, B natural and C natural. Candidate A writes D natural minor and uses B-flat throughout; Candidate B writes the correct pitches but treats A as the tonic and ends on A. The current scheme gives 1 mark per pitch (8) and 1 mark per bar of rhythm (4). Candidate A scores 10/12 and Candidate B scores 11/12. The class has studied major and minor scales but not modes. The teacher has a 5-minute feedback slot and wants a defensible, reliable mark without turning the lesson into a theory lecture.
1. How should Candidate A be marked? Is the B-flat an error, or a defensible tonal hearing? What about Candidate B’s A tonic?
Read the worked answer
Candidate A has heard the pitch set of D Dorian (D E F G A B C) but interpreted it as D natural minor (D E F G A Bb C). The B-flat is not a defensible variant of the given melody: if the melody has B natural, writing B-flat is a pitch error on that note. Mark note-specifically: award the other pitch marks, deduct where B-flat replaces B natural, and do not add a global ‘wrong mode’ penalty.
Candidate B has the right pitch classes but treats A as tonic; under a pitch-and-rhythm-only scheme that answer is over-rewarded, because the given melody begins and ends on D. If the scheme has no tonic mark, it cannot distinguish B from a correct answer. The fair response is to mark A’s B-flat errors as errors, mark B’s pitches as correct but note the tonal error, and revise the scheme so tonal centre is assessed separately. Otherwise the test rewards a coherent wrong hearing.
2. Design a 5-minute feedback activity that uses both answers to teach tonal centre without reteaching all scales.
Read the worked answer
Use a five-minute cycle. First, play a D drone and sing D–E–F–G–A–B–C–D; ask the class to sing it back. Second, sing the same scale with B-flat and ask which note makes it natural minor. Third, play the dictation melody over the D drone and ask students to hold up a finger when they hear B natural. Fourth, play Candidate B’s A tonic ending and ask why it feels unfinished against the D drone.
This uses the two answers as evidence rather than as a theory lecture. It teaches the difference between pitch collection and tonic without requiring the word ‘Dorian’ unless the class is ready. The teacher should finish by replaying the melody once and asking students to sing the final D, so the correct tonal centre is heard, not just explained.
3. Propose a revised 12-mark scheme that distinguishes pitch, rhythm, and tonal centre, and explain the weighting.
Read the worked answer
A defensible 12-mark split is 7 pitch + 3 rhythm + 2 tonal centre. The pitch marks should be distributed across phrases rather than one per bar, so a repeated error is not over-penalised. The rhythm marks can be one for each two-bar phrase plus one for the final cadence. The two tonal-centre marks are for the final D and for a cadence that confirms D.
With that scheme, Candidate A might score 5/7 pitch + 3/3 rhythm + 2/2 tonal = 10; Candidate B might score 7/7 + 3/3 + 0/2 = 10. The scheme is not designed to make the marks equal; it is designed to separate different errors. A 7+3+2 split samples three constructs and prevents Candidate B’s wrong tonic from scoring 11/12. The teacher should explain the scheme before the next test so students know that pitch alone is not the whole task.