gistfile1.erb

<%= simple_nested_form_for @album, :html => { :class => 'form-horizontal' } do |f| %>
 
  <fieldset>
    <legend><%= controller.action_name.capitalize %></legend>
    <%= f.error_notification %>
    
    <%= f.input :title %>
    <%= f.input :year, :collection => Date.today.year.downto(Date.today.year - 90)  %>
    <%= f.input :artist %>
		<%= f.input :credits %>
		
		<%= f.simple_fields_for :songs do |song_form| %>
			<%= song_form.association :songs %>
		  <%= song_form.link_to_remove "Remove this song" %>
		<% end %>
		
		<p><%= f.link_to_add "Add a song", :songs %></p>
						
    <div class="form-actions">
      <%= f.submit nil, :class => 'btn btn-primary' %>
      <%= link_to 'Cancel', root_path, :class => 'btn' %>
    </div>
  </fieldset>

<% end %>