What is that beautiful sound

What is that beautiful sound I hear all around Where can it be found I look at the trees And see a whole lot of bees But that is not the noise That gives me such great joy So i look to the ground Where the ants are all around This small little mound But not making any sound Where is that noise That gives me such great joy Next I check the sky Where lots of loud things fly But that is not the source Of that beautiful force Then I walk home To search with a comb For that beautiful noise That gives me such great joy Finally I found The source of the sound That is making the noise That gives me such great joy Its my great little machine That is always so keen In making the best cup Of coffee that always brings me much luck