The pieces for a ctf arena, as ExPilot.Music lists them: {name, bpm, %{section => {bars, layers}}}.

banner (:cruise, 108 bpm, 56 bars) plays while no enemy is within reach: a march in F major — eight bars of snare and a horn call, a horn theme over a marching tuba with a second horn moving against it, a trumpet answer, a quiet turn through A flat major, and the theme back in full brass to a cadence on F.

raid (:combat, 140 bpm, 44 bars) plays while an enemy is within reach: the chase in G minor — a driving kick and snare over a bass in eighths, an overdriven guitar theme that returns a second time louder, a two-bar figure sequenced up through G minor, B flat, C minor and D, a breakdown of bare drums and bass ending in a snare roll, and the theme back at full force with a four-bar tail on D.