Hand and Finger Techniques

The physical motion of crossing fingers 2, 3, 4, or 5 over the thumb; used when playing scalar passages or outside of five finger scales.

Intervals

Two notes played in succession, usually in one hand but sometimes in both, whose distance is the interval of an octave of any quality.

Notation

Symbols that indicate playing a note or range of notes either an octave higher or lower than notated.