Rolf Riehm
... that the oboist and composer Rolf Riehm taught music theory in Frankfurt from 1974 to 2000 and wrote an opera, Sirenen, for a 2014 premiere at the Oper Frankfurt?
... that the <a href="./Oboe" id="mwAgE" rel="mw:WikiLink" title="Oboe">oboist</a> and composer <b id="mwAgI"><a href="./Rolf_Riehm" id="mwAgM" rel="mw:WikiLink" title="Rolf Riehm">Rolf Riehm</a></b> taught music theory <a href="./Frankfurt_University_of_Music_and_Performing_Arts" id="mwAgQ" rel="mw:WikiLink" title="Frankfurt University of Music and Performing Arts">in Frankfurt</a> from 1974 to 2000 and wrote an opera, <i id="mwAgU"><a href="./Sirenen" id="mwAgY" rel="mw:WikiLink" title="Sirenen">Sirenen</a></i>, for a 2014 premiere at the <a href="./Oper_Frankfurt" id="mwAgc" rel="mw:WikiLink" title="Oper Frankfurt">Oper Frankfurt</a>?