What non-western timbre is the prepared piano heard in this selection meant to simulate?

The non-western timbre in prepared piano heard is meant to stimulate Indonesian gamelan. 
The term Gamelan describes the traditional ensemble music of Indonesia (Java and Bali). This type of music is played with instruments like  mallets and a set of hand-played drums called kendhang.

Trumpets, saxophone, trombone, flute, french horn  mostly in jazz or classic.  you can answer the rest thats on your own honestly 

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