diff --git a/music_library.livemd b/music_library.livemd
index 58512c38..951a0e62 100644
--- a/music_library.livemd
+++ b/music_library.livemd
@@ -22,6 +22,27 @@ opts = [
 
 ## Aggregates
 
+### Number of releases per record
+
+<!-- livebook:{"attrs":"eyJjYWNoZV9xdWVyeSI6dHJ1ZSwiY29ubmVjdGlvbiI6eyJ0eXBlIjoic3FsaXRlIiwidmFyaWFibGUiOiJjb25uIn0sImRhdGFfZnJhbWVfYWxpYXMiOiJFbGl4aXIuRXhwbG9yZXIuRGF0YUZyYW1lIiwicXVlcnkiOiJzZWxlY3RcbiAgZGlzdGluY3QganNvbl9leHRyYWN0KGFydGlzdHMsICckWzBdLm5hbWUnKSBBUyBhcnRpc3RfbmFtZSxcbiAgdGl0bGUsXG4gIGpzb25fYXJyYXlfbGVuZ3RoKHJlbGVhc2VfaWRzKSBBUyBudW1iZXJfb2ZfcmVsZWFzZXNcbmZyb20gcmVjb3Jkc1xub3JkZXIgYnkgbnVtYmVyX29mX3JlbGVhc2VzIGRlc2NcbjsiLCJyZXN1bHRfdmFyaWFibGUiOiJjb3VudF9ieV9yZWxlYXNlcyIsInRpbWVvdXQiOm51bGx9","chunks":null,"kind":"Elixir.KinoDB.SQLCell","livebook_object":"smart_cell"} -->
+
+```elixir
+count_by_releases =
+  Exqlite.query!(
+    conn,
+    ~S"""
+    select
+      distinct json_extract(artists, '$[0].name') AS artist_name,
+      title,
+      json_array_length(release_ids) AS number_of_releases
+    from records
+    order by number_of_releases desc
+    ;
+    """,
+    []
+  )
+```
+
 ### Count of records per artist
 
 <!-- livebook:{"attrs":"eyJjYWNoZV9xdWVyeSI6dHJ1ZSwiY29ubmVjdGlvbiI6eyJ0eXBlIjoic3FsaXRlIiwidmFyaWFibGUiOiJjb25uIn0sImRhdGFfZnJhbWVfYWxpYXMiOiJFbGl4aXIuRXhwbG9yZXIuRGF0YUZyYW1lIiwicXVlcnkiOiJzZWxlY3QganNvbl9leHRyYWN0KGFydGlzdC52YWx1ZSwgJyQubmFtZScpIGFzIG5hbWUsIGNvdW50KDEpIGFzIGNcbmZyb20gcmVjb3JkcywganNvbl9lYWNoKHJlY29yZHMuYXJ0aXN0cykgYXJ0aXN0XG5ncm91cCBieSBuYW1lXG5vcmRlciBieSBjIGRlc2NcbjsiLCJyZXN1bHRfdmFyaWFibGUiOiJjb3VudF9ieV9hcnRpc3QiLCJ0aW1lb3V0IjpudWxsfQ","chunks":null,"kind":"Elixir.KinoDB.SQLCell","livebook_object":"smart_cell"} -->