Various systems and methods for tracking heart rate for music selection are described herein. A system to track heart rate for music selection comprises a target heart rate module to identify a target heart rate of a user for an activity session a heart rate monitor module to receive a current heart rate of the user from a sensor coupled to the system and an audio selection module to determine when a difference between the current heart rate and the target heart rate is larger than a threshold value, and when the difference is larger than the threshold value: identify a beats per minute of a current audio selection determine a beats per minute to adjust the heart rate of the user from the current heart rate toward the target heart rate and select a next audio selection from an audio library with a beats per minute similar to the beats per minute to adjust the heart rate.