OneWord - so little time [crescendo]

As the music approached crescendo, the assassin carefully took aim with his 6.5 mm Mannlicher-Carcano bolt-action rifle. He had memorized the score so that he would be able to time his shot perfectly. The final cymbal crash of the piece would be the last thing his rival would ever hear!

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Thanks for another great word, Captain! This was a bit of a cliche, but it was wickedly fun to write!