diff --git a/admin/app/admin/cohorts_monthly.rb b/admin/app/admin/cohorts_monthly.rb
index dc6351704..4ef74f4d8 100644
--- a/admin/app/admin/cohorts_monthly.rb
+++ b/admin/app/admin/cohorts_monthly.rb
@@ -13,58 +13,63 @@ ActiveAdmin.register Cohort, :as => 'Cohorts Monthly' do
   controller do
     def scoped_collection
       objs = super
-      alltime = true
       args = params[:q] || {}
-      if args[:monthly_start_eq].nil? || args[:monthly_end_eq].nil?
-        Cohort.alltime_cohorts! if 0 == Cohort.where(all_time: true).count
-      else
+      if !(args[:monthly_start_eq].nil? || args[:monthly_end_eq].nil?)
         mstart, mend = Time.parse(args[:monthly_start_eq]), Time.parse(args[:monthly_end_eq])
-        # populate monthlys
-        Cohort.monthly_cohorts(mstart, mend)
-        objs = objs.where(monthly_start: mstart, monthly_end: mend)
-        alltime = false
+        if mstart < mend
+          Cohort.monthly_cohorts(mstart, mend) # populate monthlys
+          objs = objs.where(monthly_start: mstart, monthly_end: mend)
+        end
       end
-      objs = objs.where(all_time: alltime).order('group_start DESC')
-      logger.debug("*** scoped_collection:  #{objs.to_sql}")
-      objs
+      objs.where(all_time: false).order('group_start DESC')
     end
   end
 
   index :title => "Monthly Cohorts" do
     column 'Cohort' do |cc| cc.group_start_str end
-    column Cohort::TOTAL_LABELS[:registered_users] do |cc| cc.data_val(:registered_users) end
+    column Cohort::MONTHLY_LABELS[:registered_users] do |cc| cc.data_val(:registered_users) end
 
-    column Cohort::TOTAL_LABELS[:first_downloaded_client_at] do |cc| 
+    column Cohort::MONTHLY_LABELS[:first_downloaded_client_at] do |cc| 
       cc.data_val(:first_downloaded_client_at)
     end
     column '%' do |cc| cc.data_val(:first_downloaded_client_at, true) end
 
-    column Cohort::TOTAL_LABELS[:first_certified_gear_at] do |cc| 
+    column Cohort::MONTHLY_LABELS[:first_certified_gear_at] do |cc| 
       cc.data_val(:first_certified_gear_at)
     end
     column '%' do |cc| cc.data_val(:first_certified_gear_at, true) end
 
-    column Cohort::TOTAL_LABELS[:music_sessions_user_history] do |cc| 
-      cc.data_val(:music_sessions_user_history)
+    column Cohort::MONTHLY_LABELS[:music_sessions_user_history_1] do |cc| 
+      cc.data_val(:music_sessions_user_history_1)
     end
-    column '%' do |cc| cc.data_val(:music_sessions_user_history, true) end
+    column '%' do |cc| cc.data_val(:music_sessions_user_history_1, true) end
 
-    column Cohort::TOTAL_LABELS[:jam_track_rights] do |cc| 
+    column Cohort::MONTHLY_LABELS[:music_sessions_user_history_2_5] do |cc| 
+      cc.data_val(:music_sessions_user_history_2_5)
+    end
+    column '%' do |cc| cc.data_val(:music_sessions_user_history_2_5, true) end
+
+    column Cohort::MONTHLY_LABELS[:music_sessions_user_history_6_] do |cc| 
+      cc.data_val(:music_sessions_user_history_6_)
+    end
+    column '%' do |cc| cc.data_val(:music_sessions_user_history_6_, true) end
+
+    column Cohort::MONTHLY_LABELS[:jam_track_rights] do |cc| 
       cc.data_val(:jam_track_rights)
     end
     column '%' do |cc| cc.data_val(:jam_track_rights, true) end
 
-    column Cohort::TOTAL_LABELS[:recorded_tracks] do |cc| 
+    column Cohort::MONTHLY_LABELS[:recorded_tracks] do |cc| 
       cc.data_val(:recorded_tracks)
     end
     column '%' do |cc| cc.data_val(:recorded_tracks, true) end
 
-    column Cohort::TOTAL_LABELS[:friendships] do |cc| 
+    column Cohort::MONTHLY_LABELS[:friendships] do |cc| 
       cc.data_val(:friendships)
     end
     column '%' do |cc| cc.data_val(:friendships, true) end
 
-    column Cohort::TOTAL_LABELS[:invited_users] do |cc| 
+    column Cohort::MONTHLY_LABELS[:invited_users] do |cc| 
       cc.data_val(:invited_users)
     end
     column '%' do |cc| cc.data_val(:invited_users, true) end
diff --git a/admin/app/models/cohort.rb b/admin/app/models/cohort.rb
index fd4e831cf..62b565f68 100644
--- a/admin/app/models/cohort.rb
+++ b/admin/app/models/cohort.rb
@@ -54,8 +54,13 @@ class Cohort < ActiveRecord::Base
       .map { |d| [d.year,d.mon,d.day].first(prec) }
   end
 
+  def self.earliest_cohort
+    starting = User.where(admin: false).order(:created_at).first.created_at
+    starting = EARLIEST_DATE if starting < EARLIEST_DATE
+  end
+
   def self.cohort_group_ranges(starting=nil, ending=nil)
-    starting ||= User.where(admin: false).order(:created_at).first.created_at
+    starting ||= self.earliest_cohort
     ending ||= Time.now
     dates = self.date_tuples([starting.year, starting.month], [ending.year, ending.month])
     ranges = []
@@ -70,7 +75,7 @@ class Cohort < ActiveRecord::Base
   def self.generate_monthly_cohorts(monthly_start, monthly_end)
     Cohort.delete_all(['all_time = ?',false])
     self.cohort_group_ranges.collect do |range|
-      next if range.first > monthly_start
+      next if range.first > monthly_end
       cc = Cohort.new
       cc.group_start = range.first
       cc.group_end = range.last
@@ -240,6 +245,12 @@ SQL
     self.all_time ? _all_time! : _monthly!
   end
 
+  def self.alltime_cohorts!
+    Cohort.generate_all_time_cohorts.each do |cc|
+      cc._all_time!
+    end
+  end
+
   def self.monthly_cohorts(monthly_start, monthly_end)
     self.generate_monthly_cohorts(monthly_start, monthly_end).compact.each do |cc|
       cc._monthly!
@@ -263,5 +274,17 @@ SQL
     end
   end
 
+  def self.monthly_starts
+    self.cohort_group_ranges.collect do |rr|
+      rr.first.to_s
+    end
+  end
+
+  def self.monthly_ends
+    self.cohort_group_ranges.collect do |rr|
+      rr.last.to_s
+    end
+  end
+
 end