# Note clusters (U+E120–U+E14F)

Glyph | Description | Glyph | Description
--- | --- | --- | ---
 | U+E120 (and U+1D15A) noteheadClusterSquareWhite Cluster notehead white (square) |  | U+E121 (and U+1D15B) noteheadClusterSquareBlack Cluster notehead black (square)
 | U+E122 noteheadClusterRoundWhite Cluster notehead white (round) |  | U+E123 noteheadClusterRoundBlack Cluster notehead black (round)
 | U+E124 noteheadClusterDoubleWhole2nd Double whole note cluster, 2nd |  | U+E125 noteheadClusterWhole2nd Whole note cluster, 2nd
 | U+E126 noteheadClusterHalf2nd Half note cluster, 2nd |  | U+E127 noteheadClusterQuarter2nd Quarter note cluster, 2nd
 | U+E128 noteheadClusterDoubleWhole3rd Double whole note cluster, 3rd |  | U+E129 noteheadClusterWhole3rd Whole note cluster, 3rd
 | U+E12A noteheadClusterHalf3rd Half note cluster, 3rd |  | U+E12B noteheadClusterQuarter3rd Quarter note cluster, 3rd
 | U+E12C noteheadClusterDoubleWholeTop Combining double whole note cluster, top |  | U+E12D noteheadClusterDoubleWholeMiddle Combining double whole note cluster, middle
 | U+E12E noteheadClusterDoubleWholeBottom Combining double whole note cluster, bottom |  | U+E12F noteheadClusterWholeTop Combining whole note cluster, top
 | U+E130 noteheadClusterWholeMiddle Combining whole note cluster, middle |  | U+E131 noteheadClusterWholeBottom Combining whole note cluster, bottom
 | U+E132 noteheadClusterHalfTop Combining half note cluster, top |  | U+E133 noteheadClusterHalfMiddle Combining half note cluster, middle
 | U+E134 noteheadClusterHalfBottom Combining half note cluster, bottom |  | U+E135 noteheadClusterQuarterTop Combining quarter note cluster, top
 | U+E136 noteheadClusterQuarterMiddle Combining quarter note cluster, middle |  | U+E137 noteheadClusterQuarterBottom Combining quarter note cluster, bottom
 | U+E138 noteheadDiamondClusterWhite2nd White diamond cluster, 2nd |  | U+E139 noteheadDiamondClusterBlack2nd Black diamond cluster, 2nd
 | U+E13A noteheadDiamondClusterWhite3rd White diamond cluster, 3rd |  | U+E13B noteheadDiamondClusterBlack3rd Black diamond cluster, 3rd
 | U+E13C noteheadDiamondClusterWhiteTop Combining white diamond cluster, top |  | U+E13D noteheadDiamondClusterWhiteMiddle Combining white diamond cluster, middle
 | U+E13E noteheadDiamondClusterWhiteBottom Combining white diamond cluster, bottom |  | U+E13F noteheadDiamondClusterBlackTop Combining black diamond cluster, top
 | U+E140 noteheadDiamondClusterBlackMiddle Combining black diamond cluster, middle |  | U+E141 noteheadDiamondClusterBlackBottom Combining black diamond cluster, bottom
 | U+E142 noteheadRectangularClusterBlackTop Combining black rectangular cluster, top |  | U+E143 noteheadRectangularClusterBlackMiddle Combining black rectangular cluster, middle
 | U+E144 noteheadRectangularClusterBlackBottom Combining black rectangular cluster, bottom |  | U+E145 noteheadRectangularClusterWhiteTop Combining white rectangular cluster, top
 | U+E146 noteheadRectangularClusterWhiteMiddle Combining white rectangular cluster, middle |  | U+E147 noteheadRectangularClusterWhiteBottom Combining white rectangular cluster, bottom

## Implementation notes

Scoring applications should draw simple note clusters (e.g. noteheadClusterSquareWhite, noteheadClusterRoundBlack) directly using primitives rather than using these glyphs, so that the clusters can be drawn spanning the correct interval.

The combining glyphs for note clusters are designed to allow the creation of clusters of any interval larger than a third, with a scoring application inserting the appropriate number of “middle” segments between a single instance of the “top” and “bottom” segments:

The left-hand cluster is a stack (top to bottom) of 1 x noteheadClusterHalfTop, 3 x noteheadClusterHalfMiddle, 1 x noteheadClusterHalfBottom; the right-hand cluster is 1 x noteheadDiamondClusterBlackTop, 2 x noteheadDiamondClusterBlackMiddle, 1 x noteheadDiamondClusterBlackBottom.

Clusters for intervals of a second or a third are created using a single glyph, e.g. noteheadClusterQuarter2nd. These glyphs are registered such that the lowest pitch in the cluster is centered around y = 0, so to draw correctly, the glyph should be positioned on the staff position corresponding to the lowest note in the cluster.

See also the implementation notes for noteheads.