Melody:
Lyrical and song-like melodies (does not have to be in the top part), with extended phrases and less obvious cadential punctuation.
Texture:
Greater range of textural possibilities, and potential for fundamental variation in texture during a piece; texture remaining the same throughout a piece, but possibly more dense, with thicker chords.
Tempo:
Flexibility of tempo, including use of rubato ("borrowed time"- slows down... then pick up the speed).
Dynamics:
Thicker sonorities, with significant use of the sustaining pedal in piano music, and a greater emphasis on a wide dynamic range.
Structure:
Phrases tending to be less regular and predictable in length; structures often involving melodically unrelated sections, such as a separate introduction or coda (end).
Harmony:
Rich harmonies and more dense (more notes); including expressive use of chromatic notes.