Acoustic evening

Crash! Boom! Drip! There's a concert outside my window, no musical instruments, none of the traditional kind anyhow. It's Mother Nature, water cascading down from the clouds, at times intense, climactic, currently, softer, tender, with irregular beats. The aria sung by the thunder, this is no clapping, sharp staccato. This is rolling, moaning then intense. Reverberates through my shelter's walls, long beats, bass sounds. Boooooom.