diff --git a/pages/playlist.md b/pages/playlist.md
index 2b269d0..47c9a74 100644
--- a/pages/playlist.md
+++ b/pages/playlist.md
@@ -3,7 +3,7 @@
 
 - [Programming Your Own Channel](https://graceoneill.wordpress.com/2009/05/08/programming-your-own-channel/) [anarcheology](anarcheology.md)
 
-- []()
+- [Contextualize Your Listening: The Playlist as Recommendation Engine](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.302.1754&rep=rep1&type=pdf)
 
 - [DJ-boids: emergent collective behavior as multichannel radio station programming](https://dl.acm.org/doi/10.1145/604045.604089)