Alfred's Premier Piano Course Book 4 Author:Dennis Alexander, Gayle Kowalchyk, E. L. Lancaster, Victoria McArthur, and Martha Mier ; ed. Morton Manus Alfred s Premier Piano Course, Level 4 students will be playing interesting pieces that use triplets and sixteenth notes. Musical styles range from jazz and ragtime to original pieces by master composers. New concepts introduced include natural and harmonic minor scales, one octave arpeggios and chord inversions.