diff --git a/app/model.py b/app/model.py
index 7ad0042..5fca282 100644
--- a/app/model.py
+++ b/app/model.py
@@ -2,7 +2,7 @@
 
 import sqlalchemy
 
-from datetime import datetime
+from datetime import datetime, time
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy import (
     Boolean,
@@ -130,6 +130,24 @@ class Playdates(Base):
         ).delete()
         session.commit()
 
+    @staticmethod
+    def last_show(session, track):
+        """
+        Return datetime track last played during show time or None
+
+        FIXME: hard coded times in here
+        """
+
+        # dayofweek: 1 = Sunday, 2 = Monday, ..., 7 = Saturday.
+        friday = 6
+        after = time(20, 0)
+
+        return session.query(Playdates).filter(
+            (Playdates.track_id == track.id),
+            (func.dayofweek(Playdates.lastplayed) == friday),
+            (func.time(Playdates.lastplayed) > after),
+            ).order_by(Playdates.lastplayed.desc()).first()
+
 
 class Playlists(Base):
     """
diff --git a/app/playlists.py b/app/playlists.py
index 5ac8943..3173bb1 100644
--- a/app/playlists.py
+++ b/app/playlists.py
@@ -530,6 +530,11 @@ class PlaylistTab(QTableWidget):
         duration = Tracks.get_duration(session, self._get_row_id(row))
         return start + timedelta(milliseconds=duration)
 
+    def _can_read_track(self, track):
+        "Check track file is readable"
+
+        return os.access(track.path, os.R_OK)
+
     def _context_menu(self, pos):
 
         self.menu.exec_(self.mapToGlobal(pos))