Describe what each control does to the sound

app.py

@@ -259,7 +259,10 @@ if __name__ == "__main__":
                 type="filepath",
                 label="Seed MIDI (optional)",
                 file_types=[".mid", ".midi"],
-            ).harp_required(False),
+            ).harp_required(False).set_info((
+                "A passage to continue. Leave it out to write from nothing, in "
+                "which case the instrument list below decides the ensemble."
+            )),
             gr.Textbox(
                 value="",
                 label="Instruments",