Trois Chansons
... that Maurice Ravel wrote texts and music for Trois Chansons, his only composition for choir a cappella, in response to the outbreak of World War I?
... that <a href="./Maurice_Ravel" id="mwBTQ" rel="mw:WikiLink" title="Maurice Ravel">Maurice Ravel</a> wrote texts and music for <i id="mwBTU"><b id="mwBTY"><a href="./Trois_Chansons_(Ravel)" id="mwBTc" rel="mw:WikiLink" title="Trois Chansons (Ravel)">Trois Chansons</a></b></i>, his only composition for choir <a href="./A_cappella" id="mwBTg" rel="mw:WikiLink" title="A cappella">a cappella</a>, in response to the outbreak of World <span about="#mwt59" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"War I"}},"i":0}}]}' id="mwBTk" typeof="mw:Transclusion">War I</span>?