{"version":"1.0","provider_name":"Fretboard Knowledge","provider_url":"https:\/\/fretboardknowledge.com\/guitar","author_name":"admin","author_url":"https:\/\/fretboardknowledge.com\/guitar\/author\/admin\/","title":"Backing Tracks for Common Chord Progressions - Fretboard Knowledge","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"ewTxeHI5tO\"><a href=\"https:\/\/fretboardknowledge.com\/guitar\/kb2\/backing-tracks-for-common-chord-progressions\/\">Backing Tracks for Common Chord Progressions<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/fretboardknowledge.com\/guitar\/kb2\/backing-tracks-for-common-chord-progressions\/embed\/#?secret=ewTxeHI5tO\" width=\"600\" height=\"338\" title=\"&#8220;Backing Tracks for Common Chord Progressions&#8221; &#8212; Fretboard Knowledge\" data-secret=\"ewTxeHI5tO\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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:\/\/fretboardknowledge.com\/guitar\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"Jazz Chord ProgressionsJazz Blues Chord ChangesJazz Blues Backing Track 001 in All KeysRhythm ChangesRhythm Changes Backing Track 001 in All KeysRhythm ChangesRhythm Changes Backing Track 002 in All KeysColtrane ChangesColtrane ...","thumbnail_url":"https:\/\/fretboardknowledge.com\/guitar\/wp-content\/uploads\/sites\/5\/2018\/03\/007-Gitaarschool-Ermelo-by-JKey-Photography.jpg","thumbnail_width":800,"thumbnail_height":533}