diff --git a/aircox/management/commands/diffusions.py b/aircox/management/commands/diffusions.py
index 8e4b28b..e614e91 100755
--- a/aircox/management/commands/diffusions.py
+++ b/aircox/management/commands/diffusions.py
@@ -40,7 +40,7 @@ class Actions:
             items = schedule.diffusions_of_month(date, exclude_saved = True)
             count[0] += len(items)
 
-            # we can't bulk create because we ned signal processing
+            # we can't bulk create because we need signal processing
             for item in items:
                 conflicts = item.get_conflicts()
                 item.type = Diffusion.Type.unconfirmed \
diff --git a/aircox/settings.py b/aircox/settings.py
index 00879b1..4861b32 100755
--- a/aircox/settings.py
+++ b/aircox/settings.py
@@ -17,6 +17,7 @@ ensure('AIRCOX_DEFAULT_USER_GROUPS', {
         'change_sound',
         'add_track', 'change_track', 'delete_track',
         'add_tag', 'change_tag', 'delete_tag',
+        'add_comment', 'edit_comment', 'delete_comment',
     ),
     # ensure user can log in using Wagtail
     'Editors': None
diff --git a/aircox/signals.py b/aircox/signals.py
index 26f5c75..093ed6a 100755
--- a/aircox/signals.py
+++ b/aircox/signals.py
@@ -4,7 +4,7 @@ from django.contrib.auth.models import User, Group, Permission
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import F
 from django.db.models.signals import post_save, pre_save, pre_delete, m2m_changed
-from django.dispatch import receiver
+from django.dispatch import receiver, Signal
 from django.utils import timezone as tz
 from django.utils.translation import ugettext as _, ugettext_lazy
 
@@ -12,6 +12,8 @@ import aircox.models as models
 import aircox.utils as utils
 import aircox.settings as settings
 
+
+
 # Add a default group to a user when it is created. It also assigns a list
 # of permissions to the group if it is created.
 #
diff --git a/aircox_cms/models.py b/aircox_cms/models.py
index effa0f4..2b923e3 100755
--- a/aircox_cms/models.py
+++ b/aircox_cms/models.py
@@ -519,8 +519,6 @@ class Track(aircox.models.Track,Orderable):
 
 
 class DiffusionPage(Publication):
-    order_field = 'diffusion__start'
-
     diffusion = models.OneToOneField(
         aircox.models.Diffusion,
         verbose_name = _('diffusion'),
@@ -641,6 +639,9 @@ class DiffusionPage(Publication):
 
     def save(self, *args, **kwargs):
         if self.diffusion:
+            # force to sort by diffusion date in wagtail explorer
+            self.latest_revision_created_at = self.diffusion.start
+
             # set publish_as
             if not self.pk:
                 self.publish_as = self.diffusion.program.page
diff --git a/aircox_cms/signals.py b/aircox_cms/signals.py
index ee6ffbc..1a7c736 100755
--- a/aircox_cms/signals.py
+++ b/aircox_cms/signals.py
@@ -1,10 +1,11 @@
 from django.db.models import Q
 from django.db.models.signals import post_save, pre_delete
 from django.dispatch import receiver
+from django.utils import timezone as tz
 from django.utils.translation import ugettext as _, ugettext_lazy
 from django.contrib.contenttypes.models import ContentType
 
-from wagtail.wagtailcore.models import Page, Site
+from wagtail.wagtailcore.models import Page, Site, PageRevision
 
 import aircox.models as aircox
 import aircox_cms.models as models
@@ -185,10 +186,16 @@ def diffusion_post_saved(sender, instance, created, *args, **kwargs):
     page = models.DiffusionPage.from_diffusion(
         instance, live = False
     )
-    instance.program.page.add_child(
+    page = instance.program.page.add_child(
         instance = page
     )
 
+    # because wagtail don't have custom order field in explorer
+    rev = PageRevision(page = page,
+                       created_at = page.date - tz.timedelta(days = 365*5),
+                       content_json = '{}')
+    rev.save()
+
 @receiver(pre_delete, sender=aircox.Diffusion)
 def diffusion_pre_deleted(sender, instance, *args, **kwargs):
     clean_page_of(instance)
diff --git a/aircox_cms/static/aircox_cms/css/theme.css b/aircox_cms/static/aircox_cms/css/theme.css
index 1aa56ed..49958f5 100755
--- a/aircox_cms/static/aircox_cms/css/theme.css
+++ b/aircox_cms/static/aircox_cms/css/theme.css
@@ -222,3 +222,12 @@ main.detail {
     color: #616161;
 }
 
+section.playlist .artist {
+    display: inline-block;
+    margin-right: 0.4em;
+}
+section.playlist .artist:after {
+    padding-left: 0.2em;
+    content: ':'
+}
+