Introduction and Allegro
... that on a commission of the Érard company to show off the expressive range of its double-action pedal harp, Maurice Ravel composed Introduction and Allegro for harp, flute, clarinet and string quartet?
... that on a commission of the <a href="./Sébastien_Érard" id="mwEek" rel="mw:WikiLink" title="Sébastien Érard">Érard company</a> to show off the expressive range of its double-action <a href="./Pedal_harp" id="mwEeo" rel="mw:WikiLink" title="Pedal harp">pedal harp</a>, <a href="./Maurice_Ravel" id="mwEes" rel="mw:WikiLink" title="Maurice Ravel">Maurice Ravel</a> composed <i id="mwEew"><b id="mwEe0"><a href="./Introduction_and_Allegro_(Ravel)" id="mwEe4" rel="mw:WikiLink" title="Introduction and Allegro (Ravel)">Introduction and Allegro</a></b></i> for <a href="./Harp" id="mwEe8" rel="mw:WikiLink" title="Harp">harp</a>, <a href="./Flute" id="mwEfA" rel="mw:WikiLink" title="Flute">flute</a>, <a href="./Clarinet" id="mwEfE" rel="mw:WikiLink" title="Clarinet">clarinet</a> and <a href="./String_quartet" id="mwEfI" rel="mw:WikiLink" title="String quartet">string quartet</a>?