&lt;p&gt;If you&#039;ve never been to an opera before, lose your virginity to &lt;strong&gt;&lt;em&gt;Carmen&lt;/em&gt;&lt;/strong&gt;. It&#039;s on the long side (with intermissions, three and a half hours), but aside from that it&#039;s the ideal opera for newbies. You already know at least three of the tunes, probably more, and there&#039;s anot...