The onset of rain

At least 8 percussion but flexible to add as many hand drums/djembes as are available.  The onset of rain is a journey in sound as the rain arrives and then increases in intensity.  Instrumentation is thumb pianos (5 if possible of different sizes) with hand drums and 3 separate hand drum parts (these can have multiple players).

Duration is 3 to 4 minutes and the download includes a complete score and all the parts in A4 format as an 1.5MB PDF of 22 pages.