Generate a high arousal and low valence music piece by creating a dynamic and aggressive composition that conveys a sense of urgency and drive. Emphasize fast tempos, use dissonant chords, and incorporate rapid scale runs to express tension and adrenaline. Experiment with abrupt changes in dynamics and rhythm to heighten the intensity of the piece. End the composition with a powerful and unresolved climax to leave the listener feeling unease and anticipation.