In some cases, primarily with eighth notes, beams may encompass more than one beat and up to two beats.
Primary beams link entire note groups together.
Secondary beams define further subdivisions of a note-group beamed together by a primary beam. Binary Form - Music which is divided into two parts. Beams on eighth notes, sixteenth notes, or triplets should not cross over the imaginary barline. When the anticipation occurs in the melody, it is a melodic anticipation. Chord Tone - the pitches in a chord that determine its basic sound quality.