Home screen & tracklist
We settled on 2 input methods to allow flexibility without overwhelming users.
The queue of songs is then shown, with a few songs as "benchmarks" to indicate the workout's beginning, middle, and end segments. The dots in the top right allow users to edit (add, delete, reorder) the playlist.
This screen allows access to queue/history (top left) and account settings (top right).
I left a bar at the bottom that allows users to view the current tempo and adjust for the next song to be slower or faster.
This reduced room for playback controls, so I followed Pandora's layout, displaying the previous and upcoming tracks on either side of the current track.