Patent attributes
Using data generated by a sensor, a current value of a metric representative of a physiological state of a user of a digital content playback device can be determined. This metric can be compared to a set of predefined target ranges, and a tempo increase factor can be selected based on a range within the set of predefined target ranges to which the metric corresponds. The tempo increase factor can be applied to adjust a current playback tempo of music provided by the digital content playback device to the user. Methods, systems, articles of manufacture, and the like capable of implementing such features are described.