Well observed Mike! You've captured that sudden silence (and heightened sense of hearing) which comes after a sudden thunderclap. And I really like how you use the structure of your haiku to aesthetic effect – the verse begins traditionally with 5 – 7 syllables, then the final line is a single word, but that word is onomatopoeic, and resonates long afterward, like the guitar strings themselves. Great stuff! Thank you for sharing this.