Double Concerto
... that the Double Concerto for oboe and harp was composed by Hans Werner Henze for Heinz Holliger and his wife Ursula, and performed with 18 string players of Paul Sacher's orchestra?
... that the <b id="mwBHA"><a href="./Double_Concerto_(Henze)" id="mwBHE" rel="mw:WikiLink" title="Double Concerto (Henze)">Double Concerto</a></b> for oboe and harp was composed by <a href="./Hans_Werner_Henze" id="mwBHI" rel="mw:WikiLink" title="Hans Werner Henze">Hans Werner Henze</a> for <a href="./Heinz_Holliger" id="mwBHM" rel="mw:WikiLink" title="Heinz Holliger">Heinz Holliger</a> and his wife <a href="./Ursula_Holliger" id="mwBHQ" rel="mw:WikiLink" title="Ursula Holliger">Ursula</a>, and performed with 18 string players of <a href="./Paul_Sacher" id="mwBHU" rel="mw:WikiLink" title="Paul Sacher">Paul Sacher</a>'s orchestra?