Le Concert Spirituel
... that Le Concert Spirituel played Handel's open-air music at the Proms with an ensemble that comprised 18 oboes, 9 trumpets, 9 trombones, and strings?
... that <b id="mwAvs"><a href="./Le_Concert_Spirituel" id="mwAvw" rel="mw:WikiLink" title="Le Concert Spirituel">Le Concert Spirituel</a></b> played <a href="./Music_for_the_Royal_Fireworks" id="mwAv0" rel="mw:WikiLink" title="Music for the Royal Fireworks">Handel's open-air music</a> at the <a class="mw-redirect" href="./The_Proms" id="mwAv4" rel="mw:WikiLink" title="The Proms">Proms</a> with an ensemble that comprised 18 oboes, 9 trumpets, 9 trombones, and strings?