There was a rhythmic pounding on the roof

a song with the drums of its own.

Pitter-patter, then tip-tap-tap

the sound sprinkled from everywhere.

Sky turned dark then thunder struck

bringing its melody of blast and light.

Everyone's out from their rooms

laughing and lifting the hot air gloom.

Dust is settling, flowers are glistening

spreading the very first earthly fragrance.

A lullaby so sweet enriching our hearts

and refreshing our minds so deep.

I listen for a while and then wait

as the first drop hits my face,

Oh! the joy of rain.  

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A bit unstructured. xD