Philharmonia Quartet Berlin
... that the Philharmonia Quartet Berlin, formed by principal players of the Berlin Philharmonic, celebrated its 30th anniversary with a recording of all of Beethoven's string quartets?
... that the <b id="mwAeE"><a href="./Philharmonia_Quartet_Berlin" id="mwAeI" rel="mw:WikiLink" title="Philharmonia Quartet Berlin">Philharmonia Quartet Berlin</a></b>, formed by principal players of the <a href="./Berlin_Philharmonic" id="mwAeM" rel="mw:WikiLink" title="Berlin Philharmonic">Berlin Philharmonic</a>, celebrated its 30th anniversary with a recording of all of <a href="./Ludwig_van_Beethoven" id="mwAeQ" rel="mw:WikiLink" title="Ludwig van Beethoven">Beethoven</a>'s <a href="./String_quartet" id="mwAeU" rel="mw:WikiLink" title="String quartet">string quartets</a>?