diff --git a/shukusai/src/constants.rs b/shukusai/src/constants.rs
index 1f0868b6..fc53ba23 100644
--- a/shukusai/src/constants.rs
+++ b/shukusai/src/constants.rs
@@ -147,6 +147,9 @@ pub const AUDIO_VERSION: u8 = 0;
 /// Current major version of the [`Playlists`]
 pub const PLAYLIST_VERSION: u8 = 0;
 
+/// Current major version of the [`Scrobble`]
+pub const SCROBBLE_VERSION: u8 = 0;
+
 #[cfg(target_os = "windows")]
 #[cfg(target_arch = "x86_64")]
 /// OS + Arch
diff --git a/shukusai/src/state/mod.rs b/shukusai/src/state/mod.rs
index e2c39e2b..e1828a5c 100644
--- a/shukusai/src/state/mod.rs
+++ b/shukusai/src/state/mod.rs
@@ -12,3 +12,6 @@ pub use phase::*;
 
 mod playlist;
 pub use playlist::*;
+
+mod scrobble;
+pub use scrobble::*;
diff --git a/shukusai/src/state/scrobble.rs b/shukusai/src/state/scrobble.rs
new file mode 100644
index 00000000..40605dae
--- /dev/null
+++ b/shukusai/src/state/scrobble.rs
@@ -0,0 +1,46 @@
+//---------------------------------------------------------------------------------------------------- Use
+use crate::{
+    collection::{Album, AlbumKey, Artist, ArtistKey, Collection, Song, SongKey},
+    constants::{FESTIVAL, FRONTEND_SUB_DIR, HEADER, SCROBBLE_VERSION, STATE_SUB_DIR},
+};
+use bincode::{Decode, Encode};
+use serde::{Deserialize, Serialize};
+use std::collections::BTreeMap;
+use std::sync::Arc;
+
+//---------------------------------------------------------------------------------------------------- Scrobble
+disk::bincode2!(
+    Scrobble,
+    disk::Dir::Data,
+    FESTIVAL,
+    formatcp!("{FRONTEND_SUB_DIR}/{STATE_SUB_DIR}"),
+    "scrobble",
+    HEADER,
+    SCROBBLE_VERSION
+);
+/// TODO
+//                         song     seconds
+//                           v        v
+pub struct Scrobble(BTreeMap<SongKey, u64>);
+
+impl Scrobble {
+    pub(crate) fn new(song_key_max: usize) -> Self {
+        Self(
+            (0..song_key_max)
+                .map(|key| (SongKey::from(key), 0))
+                .collect(),
+        )
+    }
+
+    pub(crate) fn inner(&self) -> &BTreeMap<SongKey, u64> {
+        &self.0
+    }
+}
+
+//---------------------------------------------------------------------------------------------------- TESTS
+//#[cfg(test)]
+//mod tests {
+//  #[test]
+//  fn __TEST__() {
+//  }
+//}