{"version":"1.0","provider_name":"\u97f3\u6a02\u5b78\u9662, \u97f3\u6a02\u5b78\u6821, \u97f3\u6a02\u4e2d\u5fc3, \u5531\u6b4c\u8ab2\u7a0b, \u5b78\u9f13","provider_url":"https:\/\/parklandmusic.com.hk\/en","author_name":"parklandmusic","author_url":"https:\/\/parklandmusic.com.hk\/en\/author\/parklandmusic\/","title":"Piano Structure and Theory","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Y3ZDJHNuwA\"><a href=\"https:\/\/parklandmusic.com.hk\/en\/music-blog-en\/piano-structure-and-theory\/\">Piano Structure and Theory<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/parklandmusic.com.hk\/en\/music-blog-en\/piano-structure-and-theory\/embed\/#?secret=Y3ZDJHNuwA\" width=\"600\" height=\"338\" title=\"&#8220;Piano Structure and Theory&#8221; &#8212; \u97f3\u6a02\u5b78\u9662, \u97f3\u6a02\u5b78\u6821, \u97f3\u6a02\u4e2d\u5fc3, \u5531\u6b4c\u8ab2\u7a0b, \u5b78\u9f13\" data-secret=\"Y3ZDJHNuwA\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/parklandmusic.com.hk\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"Modern pianos have two basic configurations (with subcategories): the grand piano and the upright piano. In grand pianos, the frame and strings are horizontal, with the strings extending away from the keyboard. The action lies beneath the strings, and uses gravity as its means of return to a state of rest. Upright pianos, also called [&hellip;]"}