Half-step pitch discrimination, both melodically and chordally.
Downward leaps good for “crossing the break” work. Excellent base for improvisation and learning to hear an underlying chord structure.
Marty Heresniak, Voice Teacher, Actor, Writer, Singer
Quoted from: Heresniak, Marty and Christopher Woitach, “Changing the Standards -- Alternative Teaching Materials.” Journal of Singing, vol. 58, no. 1, Sep./Oct. 2001.