diff --git a/README b/README
index 70c95f3..46d1d5a 100644
--- a/README
+++ b/README
@@ -13,3 +13,4 @@ gunicorn --config gunicorn_config.py app:app
 
 
 4ton.wav by al_sub -- https://freesound.org/s/137267/ -- License: Attribution NonCommercial 4.0
+Prague Metro Line A Chime by chungus43A -- https://freesound.org/s/724058/ -- License: Creative Commons 0
diff --git a/samples/724058__chungus43a__prague-metro-line-a-chime.wav b/samples/724058__chungus43a__prague-metro-line-a-chime.wav
new file mode 100644
index 0000000..fce8ea5
Binary files /dev/null and b/samples/724058__chungus43a__prague-metro-line-a-chime.wav differ
diff --git a/samples/metro.wav b/samples/metro.wav
new file mode 100644
index 0000000..86ac098
Binary files /dev/null and b/samples/metro.wav differ