Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A haunting fpiece

This piece is literally and figuratively a haunting. The texts are reinforced by the shadowy orchestration, the subtle spectral techniques, the decay of the sound of the voice and especially in the final piece with its references to music of the past, this makes a haunting elegy to Gerard Grisey as a meditation on his crossing of the threshold.