Athletic performance sensing and/or tracking systems and methods

An apparatus comprising:

• a sensor;
• a processor;
• a display;
• and
• a non-transitory computer-readable medium storing computer readable instructions that, when executed, cause the processor to:
• receive performance data from a sensor measuring athletic performance of a first user as the first user is performing an activity;
• provide a playback of a first song as the first user is performing the activity;
• provide a playback of a second song after the playback of the first song as the first user continues to perform the activity;
• analyze received performance data specific to the playback of the first song to determine if a performance parameter has decreased between the playback of the first song and the second song;
• and
• alter a first playback characteristic of the second song based on determining that the performance parameter of the activity by the first user has decreased, wherein altering the first playback characteristic of the second song comprises altering the first playback characteristic of the second song to more closely match a playback characteristic of the first song;
• and
• generate a display of the performance parameter specific to the playback of the second song.

An apparatus comprising:

• a processor;
• a display;
• a sensor;
• and
• a non-transitory computer-readable medium storing computer readable instructions that, when executed, cause the processor to at least perform:
• provide playback of a first content as a user is performing an activity;
• receive performance data from the sensor as the user is performing the activity;
• determine if a performance parameter of the user in performing the activity meets a performance target based on performance data received from the sensor as the user is performing the activity, wherein the performance target is based on previous performances of the activity by the user;
• based on determining that the performance parameter does not meet the performance target, alter a playback characteristic of the first content to increase the performance parameter of the activity by the user;
• and
• generating a display of the performance parameter specific to the playback characteristic of the first content.