Some of the data presented in Figure 1 of “Brain Structures Differ between Musicians and Non-Musicians” by Christian Gaser and Gottfried Schlaug, which appeared on pages 9240–9245 of the October 8, 2003 issue, was reused by the authors from the previous publication in Gaser and Schlaug's (2003) “Gray matter differences between musicians and non-musicians.” Ann N Y Acad Sci 999:514–517.