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https:\/\/www.britannica.com\/art\/keyboard-instrument<\/a> ","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"The piano\u2019s two-and-three black-key pattern reflects the fit between seven-note scales and twelve semitones, while giving eyes and hands a reliable map.","_geoff_meta_description_zh":"\u94a2\u7434\u9ed1\u952e\u7684\u4e8c\u4e09\u5206\u7ec4\u6765\u81ea\u4e03\u58f0\u97f3\u9636\u4e0e\u5341\u4e8c\u534a\u97f3\u7684\u91cd\u53e0\uff0c\u4e5f\u4e3a\u773c\u775b\u548c\u624b\u6307\u63d0\u4f9b\u7a33\u5b9a\u5750\u6807\uff0c\u4f7f\u6f14\u594f\u8005\u80fd\u5feb\u901f\u8fa8\u8ba4\u97f3\u540d\u3001\u548c\u5f26\u4e0e\u8c03\u6027\u4f4d\u7f6e\u3002","_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[787297389],"tags":[787294817,787294770,787300897,787295331],"class_list":["post-20572","post","type-post","status-publish","format-standard","hentry","category-western-music","tag-787294817","tag-music-theory","tag-piano-keyboard","tag-787295331",""],"translatepress_titles":{"en_AU":"Why Do Piano Black Keys Form Groups of Two and Three?","zh_CN":"\u94a2\u7434\u9ed1\u952e\u4e3a\u4ec0\u4e48\u5206\u6210\u4e24\u679a\u548c\u4e09\u679a\uff1f"},"jetpack_publicize_connections":[],"jetpack_likes_enabled":false,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p1ar9H-5lO","jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/20572","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/users\/17897162"}],"replies":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/comments?post=20572"}],"version-history":[{"count":0,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/20572\/revisions"}],"wp:attachment":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/media?parent=20572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/categories?post=20572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/tags?post=20572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
https:\/\/www.britannica.com\/art\/scale-music<\/a>
https:\/\/www.britannica.com\/art\/chromaticism<\/a><\/p>\n