diff --git a/web/lib/tasks/mobile.rake b/web/lib/tasks/mobile.rake
index 31629785d..7168a9033 100644
--- a/web/lib/tasks/mobile.rake
+++ b/web/lib/tasks/mobile.rake
@@ -13,7 +13,7 @@ namespace :mobile do
     end
 
     unless File.exists?(tmp_fname)
-      puts "*** ERROR: download failed:  `#{cmd}`"
+      $stderr.puts "*** ERROR: download failed:  `#{cmd}`"
       return
     end
 
@@ -52,6 +52,8 @@ namespace :mobile do
         artist: {},
       }
     }
+    
+    indices = jtx_json[:jtx_indices]
 
     CSV.foreach(tmp_fname) do |row|
       jtartist = row[0]
@@ -66,12 +68,12 @@ namespace :mobile do
         artist: jtartist,
         genre: jt.genres.map(&:description).join(', '),
         id: jt.id,
+        key: jt.id,
         name: jtname,
         plan_code: jt.plan_code,
         year: jt.year
       }
       # jtx_json[:jtx_data] << jtdata
-      indices = jtx_json[:jtx_indices]
 
       first_char = jtartist[0].upcase
       if (1..9) === first_char.to_i || '0' == first_char
@@ -90,6 +92,20 @@ namespace :mobile do
       idx_artist << jtdata
     end
 
+    alphanum = indices[:alphanum]
+    songs = []
+    alphanum.keys.sort.each do |key|
+      songs << { key: key, data: alphanum[key] }
+    end
+    indices[:alphanum] = songs
+
+    artists = indices[:artist]
+    artists_new = []
+    artists.keys.sort.each do |key|
+      artists_new << { key: key, data: artists[key] }
+    end
+    indices[:artist] = artists_new
+
     File.open("#{Rails.root}/tmp/jtx_indices.json", 'w') do |ff|
       ff.write jtx_json.to_json
     end