anchor.diff:      <% else %>
         <%= t('.nofile') %>
       <% end %>
  -    <%= @song.description %>
  -    <% if @song.show_download_link && @song.resource %>
  -      <div style="text-align: center">
  +    <div class="music-description">
  +      <%= @song.description.html_safe %>
  +    </div>
  +    <% if @song.show_download_link && @song.resource -%>
  +      <div class="music-download">
           <%= link_to t('.download'), @song.resource.url %><br/>
           <%= t('.download-advice') %>
         </div>
  
positive.code: <% content_for :body_content_title do %>
    <%=h @song.artist %> - <%=h @song.title %>
  <% end %>
  
  <% content_for :body_content_left do %>
  
negative.code:   <aside>
      <h2><%= t('.other') %></h2>
      <ul id="track">
        <% @songs.each do |song| -%>
          <li id="track">
            <% if @song == song %>
             <b><%= link_to song.title, song_url(song) %></b>
  