duration
refers to the lengths of sounds and silences in music and includes the aspects of beat, rhythm, metre, tempo, pulse rates and absence of pulse
pitch
refers to the relative highness and lowness of sounds. Important aspects include high, low, higher and lower pitches, direction of pitch movement, melody, harmony, indefinite and definite pitch
dynamics
refer to the volume of sound. Important aspects include the relative softness and loudness of sound, change of loudness (contrast), and the emphasis on individual sounds (accent).
expressive techniques
refers to the musical detail that articulates a style or interpretation of a style.
tone colour
refers to that aspect of sound that allows the listener to identify the sound source or combinations of sound sources.
texture
results from the way voices and/or instruments are combined in music.
structure
refers to the idea of design or form in music. Relates to the ways in which music sounds the same (or similar) and/or different.