diff --git a/-data/explorables.csv b/-data/explorables.csv
index 9003ad0..bbd4c1e 100644
--- a/-data/explorables.csv
+++ b/-data/explorables.csv
@@ -179,3 +179,4 @@
 "Making sense of COVID19 through simulations","","http://www.r2d3.us/covid-19/","covid_making_sense.png","biology","","Stephanie Yee, Tony Chu"
 "What Happens Next?","covid-19 futures explained, with playable simulations","https://ncase.me/covid-19/","covid_futures.png","biology","yes","Marcel Salathé, Nicky Case"
 "Marvin Minsky and The Ultimate TinkerToy","An essay on the legacy of Marvin Minsky with programmable interactive simulations","https://tinlizzie.org/tinkertoy/","ultimate-tinkertoy.png","biology,programming","","Alan Kay, John Maloney and Yoshiki Ohshima"
+"Overtone Series","An interactive demonstration of the overtone series (aka harmonic series)","https://muted.io/overtone-series/","overtone-series.png","art","yes","Sébastien Noël"
diff --git a/-thumbs/overtone-series.png b/-thumbs/overtone-series.png
new file mode 100644
index 0000000..0998419
Binary files /dev/null and b/-thumbs/overtone-series.png differ