{"version":"1.0","provider_name":"OAB","provider_url":"https:\/\/oab.com.pl\/en","author_name":"Maciek","author_url":"https:\/\/oab.com.pl\/en\/author\/Maciek\/","title":"30th Ludwig van Beethoven Easter Festival, Warsaw &#8211; OAB","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"KJYtiBoPlv\"><a href=\"https:\/\/oab.com.pl\/en\/koncerty\/30th-ludwig-van-beethoven-easter-festival-warsaw\/\">30th Ludwig van Beethoven Easter Festival, Warsaw<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/oab.com.pl\/en\/koncerty\/30th-ludwig-van-beethoven-easter-festival-warsaw\/embed\/#?secret=KJYtiBoPlv\" width=\"600\" height=\"338\" title=\"&#8220;30th Ludwig van Beethoven Easter Festival, Warsaw&#8221; &#8212; OAB\" data-secret=\"KJYtiBoPlv\" 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:\/\/oab.com.pl\/en\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/oab.com.pl\/en\/wp-content\/uploads\/2026\/03\/30_festival_wielkanocny_2026.webp","thumbnail_width":1000,"thumbnail_height":667,"description":"On 26 March 2026, at the National Philharmonic in Warsaw, the Orchestra of the Beethoven Academy will appear as part of the 30th Jubilee Easter Festival of Ludwig van Beethoven \u2014 one of the most distinguished classical music festivals in Poland and Europe, held continuously for three decades. Under the baton of the orchestra\u2019s First [&hellip;]"}