diff --git a/code/app.lua b/code/app.lua
index 376eac4..c00d7df 100644
--- a/code/app.lua
+++ b/code/app.lua
@@ -91,7 +91,7 @@ app:match("/spl/:station", function(self)
 
   -- make a unique name/identifier for the track using a combination of artist_name and track_name
   -- in lower-case and spaces removed
-  local unique_track_name = artist_name + track_name      -- add artist
+  local unique_track_name = artist_name .. track_name      -- prepend artist
   unique_track_name = unique_track_name:lower()           -- all to lowercase
   unique_track_name = unique_track_name:gsub("%s+", "")   -- remove spaces
 
@@ -101,7 +101,7 @@ app:match("/spl/:station", function(self)
     track = models.Tracks:create({
       name = track_name,
       unique_name = unique_track_name,
-      year = release_year,
+      year = tonumber(release_year),
       info_url = track_info_url,
       img_url = track_img_url
     })
@@ -133,7 +133,7 @@ app:match("/spl/:station", function(self)
       print("new release: " .. release_name)
       release = models.Releases:create({
         name = release_name,
-        year = release_year,
+        year = tonumber(release_year),
         country = release_country,
         label = release_label
       })
diff --git a/code/migrations.lua b/code/migrations.lua
index 6e121a5..bf0ee82 100644
--- a/code/migrations.lua
+++ b/code/migrations.lua
@@ -97,7 +97,7 @@ return {
             {"year", types.integer({ null=true }) },
             {"country", types.varchar({ null=true }) },
         })
-        create_index("releases", "name", "releaseid", { unique = true })
+        create_index("releases", "name")
 
         -- track_releases
         schema.create_table("track_releases", {
diff --git a/code/models.lua b/code/models.lua
index db3188a..8bc7a86 100644
--- a/code/models.lua
+++ b/code/models.lua
@@ -4,27 +4,6 @@
 -- -- Track stuff --
 -- -- ----------- --
 
-
--- -- releases
--- -- - name/date/id
--- local Releases = Model:extend("releases", {
---     timestamp = true,
---     relations = {
---         {"artists", has_many = "Artists"},
---         {"tracks", has_many = "Tracks"},
---         {"label", has_one = "Labels"}
---     }
--- })
-
--- -- track_releases
--- local TrackReleases = Model:extend("track_releases", {
---     timestamp = true,
---     relations = {
---         {"track", belongs_to = "Tracks"},
---         {"release", belongs_to = "Releases"}
---     }
--- })
-
 -- -- labels
 -- -- - name/date
 -- local Labels = Model:extend("labels", {
@@ -40,7 +19,6 @@
 --     }
 -- })
 
-
 -- -- mixes
 -- -- name/date
 -- local Mixes = Model:extend("mixes", {
diff --git a/code/models/airtimes.lua b/code/models/airtimes.lua
index 537ebb6..1983150 100644
--- a/code/models/airtimes.lua
+++ b/code/models/airtimes.lua
@@ -6,7 +6,7 @@ local Airtimes = Model:extend("airtimes", {
 
     timestamp = true,
     relations = {
-        {"tracks", belongs_to = "Tracks"},
+        {"track", belongs_to = "Tracks"},
         {"stations", has_one = "Stations"}
     }
 })
diff --git a/code/models/artists.lua b/code/models/artists.lua
index 6284121..b546894 100644
--- a/code/models/artists.lua
+++ b/code/models/artists.lua
@@ -6,7 +6,10 @@ local Artists = Model:extend("artists", {
     -- "date", types.date
     -- "bio", types.text
     -- "urls", types.text
-    timestamp = true
+    timestamp = true,
+    relations = {
+        {"trackartists", has_many = "TrackArtists"}
+    }
 })
 
 return Artists
\ No newline at end of file
diff --git a/code/models/releases.lua b/code/models/releases.lua
new file mode 100644
index 0000000..de29c58
--- /dev/null
+++ b/code/models/releases.lua
@@ -0,0 +1,16 @@
+local Model = require("lapis.db.model").Model
+
+-- releases
+local Releases = Model:extend("releases", {
+    -- "name", types.varchar
+    -- "label", types.varchar
+    -- "year", types.integer
+    -- "country", types.varchar
+    
+    timestamp = true,
+    relations = {
+        {"trackreleases", has_many = "TrackReleases"}
+    }
+})
+
+return Releases
\ No newline at end of file
diff --git a/code/models/trackreleases.lua b/code/models/trackreleases.lua
new file mode 100644
index 0000000..53609ec
--- /dev/null
+++ b/code/models/trackreleases.lua
@@ -0,0 +1,12 @@
+local Model = require("lapis.db.model").Model
+
+-- track_releases
+local TrackReleases = Model:extend("track_releases", {
+    timestamp = true,
+    relations = {
+        {"track", belongs_to = "Tracks"},
+        {"release", belongs_to = "Releases"}
+    }
+})
+
+return TrackReleases
\ No newline at end of file
diff --git a/code/models/tracks.lua b/code/models/tracks.lua
index 6984d3f..44b5fa1 100644
--- a/code/models/tracks.lua
+++ b/code/models/tracks.lua
@@ -9,7 +9,9 @@ local Tracks = Model:extend("tracks", {
 
     timestamp = true,
     relations = {
-        {"airtimes", has_many = "Airtimes"}
+        {"airtimes", has_many = "Airtimes"},
+        {"trackreleases", has_many = "TrackReleases"},
+        {"trackartists", has_many = "TrackArtists"}
     }
 })