Drillband, a beat-synced marching-band rehearsal player

Field notes

Drillband analyzes imported audio for tempo and beat position, then uses that information to transition between tracks at the next beat and toward a rhythmically similar section. Its playback modes include sequential, uniform-random, and seamless repeat, with skip and previous controls designed to avoid mid-count cuts. The free tier stores three tracks locally without an account; the listed Pro tier adds a 200MB cloud library, browser playback, and synchronization across up to five devices.