Abstract: Systems and methods for the customized selection and distribution of digital music are described herein. In one embodiment, a method of selecting and delivering music to a user includes creating an annotated record of one or more digital music tracks by performing a waveform analysis to determine characteristics of the one or more digital music tracks, associating a plurality of global music factors with the one or more digital music tracks, and associating a plurality of population music factors with the one or more digital music tracks. The method further includes receiving one or more user characteristics, selecting one or more digital music tracks for delivery by matching the one or more user characteristics against information in the annotated record of the one or more digital music tracks, and delivering the one or more digital music tracks to the user.