Update README.md

README.md

@@ -14,6 +14,10 @@ size_categories:
 
 Average size MIDI dataset with song names and its genres.
 
+* Artist - name of song (str)
+* Genre (list)
+* MIDI (base64 str)
+
 **COLLECTING STILL IN PROGRESS! (well, until I remove this sign)**
 
 ### Source Data