Iberian Tablature Notation
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Iberian (or Spanish) Tablature Notation is a system of notation using numbers representing pitches placed on lines to differentiate the voices and notes similar to mensural notation to show the rhythms.
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References
Kwon, Christina. 16th-Century Keyboard Tablature as Performance Notation. Chapter 3: "The Spanish Tablature". www.researchcatalogue.net. Archived at archive.is. Accessed 12 October, 2024.