EntityQ1639413· pop 9· linked from 42 articlespitch spaceSign in to savemodel for relationships between pitchesConnectionsLeonhard EulerEntityInternational Standard Book NumberEntityvowelEntityaccordionEntityBernhard RiemannEntitydimensionEntitygroupEntityHermann von HelmholtzEntityCartesian coordinate systemEntitymusic theoryEntitygraphEntityoctaveEntitygamelanEntityMIDIEntitypitchEntityhelixEntitycircle of fifthsEntityHugo RiemannEntitycolor spaceEntitylatticeEntityCategoriesPitch space