The 'super corpus' of music in everyday infancy sums to more than the total number of recorded seconds because each tune and voice identity inherited the full duration of all of its bouts, including bouts with multiple tunes, voices, and features. Distributional analyses based on this 'super corpus' show similar patterns of results to analyses based on the set of music bouts with only one tune, voice, and/or feature.
**Supplemental Code.**
All R scripts for identity space supplemental analyses.
**Supplemental Input Data.**
Input data to each of the supplemental identity space R scripts: the saved .csv files with the simulated individual durations of tunes or voices across all recordings if each recording's 'super corpus' distribution were uniform.
**Supplemental Figures and Table.**
Figure S3, Figure S4, and Table S1.