Performance, Conducting, and Ensemble Leadership
Domain 4, Performance, Conducting, and Ensemble Leadership, tests practical musicianship: conducting gesture, rehearsal technique, intonation and balance diagnosis, transposition, and instrument- or voice-specific pedagogy.
Core rules and concepts
- Conducting patterns: 2/4 and 2/2 are down–up; 3/4 is down–out–up; 4/4 is down–left–right–up; 6/8 is compound duple, two macro-beats with three subdivisions each.
- Gesture communicates style: ictus for marcato, legato curve, preparatory beat, cutoff; cue with eyes and free hand.
- Transposition: B♭ instruments sound a major second lower than written; F horn sounds a perfect fifth lower; E♭ alto sax sounds a major sixth lower.
- Ensemble diagnosis: intonation by listening to fifths and octaves and adjusting to roots; balance by separating melody and accompaniment; blend through vowel and timbre; articulation through consistent syllable and bow or tonguing.
- Vocal technique: breath support, open throat, registration. Instrumental technique: embouchure, posture, stick grip, and hand position.
Worked example
A school overture is in 6/8 at dotted-quarter = 72. Conduct two macro-beats per bar, not six: a clear downbeat with a slight rebound, then an upward-outward second beat, each containing three eighth-note subdivisions. If the ensemble drags, show the subdivision in your rebound rather than beating six; if the accompaniment is too loud, reduce your left-hand gesture while maintaining the right-hand pulse.
Traps that cost marks
Beating 6/8 in six; conducting with mirrored hands and no independent cue; transposing B♭ trumpet as if it sounds higher; diagnosing intonation without a reference pitch; over-conducting every beat; and giving a verbal correction without modeling the desired sound or gesture.