<!ELEMENT  cd           (medium?,id,artist?, title, year?,source?,quality?,tracklist?)   >
<!ATTLIST  cd
             type       (maxi|album|sampler|soundtrack|div)            #IMPLIED >
<!ELEMENT  medium       (#PCDATA)                                    >  <!-- mp3|cd|div-->
<!ELEMENT  id           (#PCDATA)                                    >
<!ELEMENT  artist       (#PCDATA)                                    >
<!ELEMENT  title        (#PCDATA)                                    >
<!ELEMENT  year         (#PCDATA)                                    >
<!ELEMENT  source       (#PCDATA)                                    >  <!--   (mp3|cd|unknown)    -->
<!ELEMENT  quality      (#PCDATA)                                    >  <!--   (untested|passed|failed|<Bitrate>) -->
<!ELEMENT  comment      (#PCDATA)                                    >  <!--    comment for infos of missing tracks alternate names etc.-->
<!ELEMENT  tracklist    (track+)                                     >

<!ELEMENT  track        (artist?,name,time?,quality?)                 >
<!ELEMENT  name         (#PCDATA)                                    >
<!ELEMENT  time         (#PCDATA)                                    >