The Akhak kwebŏm or Akhak Gwebeom or [in Hangul: 악학궤범 ; in Hanja: 樂學軌範] translates to as “musical cannons” it is the most comprehensive musical treatise on the subject of Korean music. It was compiled and published in the early Yi Dynasty during 1493 by a team headed by Song Hyŏn [1439–1504] and other editors, at the order of King Sŏngjong [ruled 1469–1494].
Consisting of nine chapters [kwŏn or chüan] in three fascicles, the treatise describes and classifies musical instruments [for aak, tangak and hyangak], musical theory, sacrificial and ritual music, costumes and ceremonial accessories for court musicians and dancers, and tangak and hyangak court dances [chŏngjae], including dancing and singing. It is an invaluable source not only for the study of Korean music theory and history, but also for the study of Korean dance, literature and language.
It is a system of musical instrument classification devised by Erich Moritz von Hornbostel and Curt Sachs and first published in the Zeitschrift für Ethnologie in 1914. An English translation was published in the Galpin Society Journal in 1961.
It is the most widely used system for classifying musical instruments by ethnomusicologists and organologists; people who study musical instruments. The system was updated in 2011 as part of the work of the Musical Instrument Museums Online [MIMO] Project.
Authors note: My website utilizes a simplified version of the “Hornbostel Sachs System” omitting technical and vague sounding terms and keeping it close to plain language for search and ease of navigation throughout this site.
Citations:Bibliography: Guitar Style, Open Tunings, and Stringband Music in Papua New Guinea by ~ Denis Crowdy ; Apwithirer: Studies in Papua New Guinea Musics, 9 ; Three: Analysis – Samoan Ki and the Hood Lagoon Area Page 46, Page 60 ; ISBN 9980-68-048-2 [book] Websites ; George Winston [georgewinston.com – Slack Key Information Booklet ; Section III ] ;
Note: The “X” denotes removed strings. Mi Composé tuning as used for Rumba and Soukous in Congo DRC, differs from the standard tuning. In which only the D string has been replaced with the bottom E string to raise the D to an entire octave.
The “Lazy D Tuning” E A D G B D as we know it in North America; is used in the genre of Maskandi music.
The tuning mentioned in the table under Botswana comes from a youtube channel Bokete7 featuring guitarists who perform a unique way in playing guitar example Ronnie performing Ba Koba Bana Where it is tuned to an open chord tuning although it not the same F X A C F X. The X denotes a missing string and the guitar is often flipped so the strings are facing from the bottom up like the Hawaiian slide guitar. Although played with strumming and picking. The amount of strings can vary from four stringed guitars, five stringed guitars to six stringed guitars.
Citations:Bibliography: Theory of African Music Volume II by Gerhard Kubik – Chapter IX Genealogy of a Malawian Musician Family pp. 247 ISBN-13: 978-0-226-45694-2 ISBN-10: 0-225-45694-3 ; Garland Encyclopedia Book Africa [book & audio cd] ; Africa & The Blues by Gerhard Kubik ; Some Characteristics Of The Blues Page 83 ; University Press of Mississippi ; ISBN 978-1-57807-146-4 ;