Holger Hennig is a Postdoctoral Fellow at the Broad Institute and the Department of Physics at Harvard University in Cambridge, MA. Previously, he was at the Max Planck Institute for Dynamics and Self-Organization in Göttingen, Germany, where he received a Ph.D. in physics. He uses concepts and tools from nonlinear dynamics and statistics to study complex systems. His research interests include the dynamics of ultracold atoms in optical lattices with a focus on breather formation and the study of human musical rhythms. For more information see http://www.nld.ds.mpg.de/~holgerh.