[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-426814-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-426814-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","piano-terminology-key-naming-how-to-better-communicate-with-your-piano-technician","Piano Terminology - Key Naming - How to better communicate with your piano technician","","Piano Terminology explains how to talk with a piano technician using common technical vocabulary, focusing on practical reference systems and tuning concepts. It introduces key naming methods for identifying notes across the 88-key numbering and numbered octave approach, clarifies how technicians avoid flats by using sharps, and defines cents as a percentage-based measure of tuning error. The guide then connects tuning practice to string tension, tuning pins, and the iterative nature of achieving pitch.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/lifestyle/","Lifestyle",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/piano-terminology-key-naming-how-to-better-communicate-with-your-piano-technician/426814/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/piano-terminology-key-naming-how-to-better-communicate-with-your-piano-technician/426814.png","ImageObject",300,407,{"name":42,"@type":43},"gewufjwa","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-22","2026-09-29",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",7,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What are the two main ways technicians reference which note or key you mean?","Question",{"text":63,"@type":64},"Most technicians use either the 1–88 key numbering system or an octave-based system where the keyboard is divided into numbered octaves (e.g., Middle-C as C4).","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What does “cents” mean in piano tuning?",{"text":68,"@type":64},"“Cents” describe how far a note or piano is out of tune. There are 100 cents between adjacent keys (half-steps) across the keyboard.",{"name":70,"@type":61,"acceptedAnswer":71},"Why is tuning described as an iterative process?",{"text":72,"@type":64},"Changing tension on one string affects the rigidity of the plate and pin block, slightly altering the pitch of other strings. As the technician corrects notes pass by pass, the tune gets closer but never fully finishes in one step.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},426814,1791001718,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,110,115,120,123,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":107,"show_sort_weight":108,"slug":109},"Healthcare",40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":124,"slug":125},10,"lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":97,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":124,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":26,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":30},3985747882900,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Mitchell Piano Service  \n[mitchellpianoservice@gmail.com](mitchellpianoservice@gmail.com) (415) 994-1030  \nPiano Terminology  \nHow to better communicate with your piano technician  \nHave you ever had that uncomfortable conversation with your doctor or mechanic when they were talking in technical terms you didn’t understand? As with any trade or profession, piano technicians also have their own vocabulary when discussing pianos. And while most technicians will take the time to explain things, it doesn’t hurt to learn some of the technician’s vocabulary.  \nKey Naming  \nAn early item to establish is how we identify the different notes 1. There are at least four different systems for identifying the keys. Fortunately most technicians typically only use a couple of these.  \nThe simplest method (used more widely by piano rebuilders) is a straightforward numbering of the keys from 1 to 88. That is, the lowest left-most A is key 1, the adjacent black key (B􀀁) is key 2, the next B is key 3, and so forth all the way up to the highest C which is key 88. Using this system, middle-C is key 40 and the A-above-middle-C that is tuned to 440Hz is 49. Usually the note name is included along with the key number in this scheme, so these would be called C40 and A49, respectively.  \nThis numbering method is even more apparent if you have the opportunity to look at an upright piano with the music desk removed. Looking at the keys as they extend into the piano, you should be able to see the key numbers printed or stamped on every key (though on older pianos, these may be hard to read) . The same is true with grand pianos.  \nThe other referencing method is only slightly more complicated and is widely used by piano technicians. In this scheme, the entire keyboard is divided into numbered octaves, each octave extending from C up to the next B. Since we have a few extra notes below the lowest-C on the left, these have been designated octave 0. Starting with the lowest A these are in sequence: A0 A\\#0 B0 C1 C\\#1 D1 and so forth. Middle-C in this scheme is C4 and the A tuned to 440Hz is A4 . High-C is C8 (the only note in this octave) .  \n1 The terms “key” and “note’ will be used interchangeably in this article. Not to be confused with a key signature.  \nOne oddity in this scheme is the lack of “flats”. Unlike in music notation, piano technicians have no need to refer to any particular key by more than one name. So all the black keys are called “sharps” and they will always be referenced to the natural key immediately to the left (that is, the black key between C4 and D4 would only be referred to as C\\#4 and never as D􀀁4) .  \nCents  \n“Cents” are a piano technician’s way of characterizing how far a single note or an entire piano is out of tune. Rather than measure the frequency error of a note, it is far more convenient and relevant to state the error sort of as a percentage. Simply put, there are 100 cents between any two adjacent keys (half-steps, e.g. A4 and A\\#4) anywhere in the piano.  \nA4 is normally tuned to 440Hz2 and A\\#4 is roughly 25Hz higher. So in this area of the keyboard, each cent of error is about 0.25Hz. If the note were 10 cents flat (2 .5Hz) then A4 would be at 437.5Hz. If a piano were 100 cents flat then it’s a complete halfstep low – someone with perfect pitch listening to C\\#4 being played would say,“that’s C4”.  \nPiano Tuning  \nWhether your piano technician is an aural tuner or uses an electronic tuning device (ETD), in the end they are both trying to accomplish the same thing: Adjusting the tension in each string so that the pitch is correct. This is done using their tuning hammer (aka a tuning wrench or lever) and turning the tuning pin associated with each string.  \nThe tuning pins are readily visible in grand pianos, being immediately under or behind the music desk. In uprights you need to lift the lid and look inside the top of the piano. (It always amazes me the number of piano owners who have never looked inside the top of the","cbCaio4h3kZLf9EP","https://ap.wps.com/l/cbCaio4h3kZLf9EP","pdf",39924,"English","# Key Naming\n## Numbering the 88 keys\n## Numbered octaves\n## Sharps without flats\n# Cents\n# Piano Tuning\n## Adjusting string tension","[{\"question\":\"What are the two main ways technicians reference which note or key you mean?\",\"answer\":\"Most technicians use either the 1–88 key numbering system or an octave-based system where the keyboard is divided into numbered octaves (e.g., Middle-C as C4).\"},{\"question\":\"What does “cents” mean in piano tuning?\",\"answer\":\"“Cents” describe how far a note or piano is out of tune. There are 100 cents between adjacent keys (half-steps) across the keyboard.\"},{\"question\":\"Why is tuning described as an iterative process?\",\"answer\":\"Changing tension on one string affects the rigidity of the plate and pin block, slightly altering the pitch of other strings. As the technician corrects notes pass by pass, the tune gets closer but never fully finishes in one step.\"}]","Piano Terminology - Key Naming - How to better communicate with your piano technician | PDF",1790641892]