FIXME

.idea/dataSources.xml

@@ -11,5 +11,15 @@
       </jdbc-additional-properties>
       <working-dir>$ProjectFileDir$</working-dir>
     </data-source>
+    <data-source source="LOCAL" name="music_database [2]" uuid="6f801a54-4854-4db5-910c-ae63a8207d3e">
+      <driver-ref>sqlite.xerial</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.sqlite.JDBC</jdbc-driver>
+      <jdbc-url>jdbc:sqlite:$PROJECT_DIR$/music_database</jdbc-url>
+      <jdbc-additional-properties>
+        <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
+      </jdbc-additional-properties>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
   </component>
 </project>

app/src/main/java/core/notevault/MainActivity.java

@@ -168,9 +168,12 @@ public class MainActivity extends AppCompatActivity implements MetaDataDialog.On
 
     @Override
     public void onSongsSelected(List<MusicNote> songs, int concertID) {
+        Log.d("MainActivity", "Inserted Songs: " + songs.size());
         new Thread(() -> {
             for(MusicNote musicNote : songs) {
                 ConcertSong concertSong = new ConcertSong(musicNote.getMusicNoteId(), concertID);
+                musicDB.musicNoteDao().insertConcertSong(concertSong);
+                Log.d("MainActivity", "Insert Song: " + musicNote.getTitle());
             }
         }).start();
     }

app/src/main/java/core/notevault/ui/gallery/detail/ConcertSongSelectorAdapter.java

@@ -75,6 +75,11 @@ public class ConcertSongSelectorAdapter extends RecyclerView.Adapter<ConcertSong
             super(itemView);
             songTitle = itemView.findViewById(R.id.song_title);
             songCheckbox = itemView.findViewById(R.id.song_checkbox);
+
+            songCheckbox.setOnCheckedChangeListener((buttonView, isChecked) -> {
+                MusicNote musicNote = filteredSongs.get(getAbsoluteAdapterPosition());
+                selectedSongs.add(musicNote);
+            });
         }
 
         void bind(MusicNote song) {