(
SynthDef( "organ", { |freq = 440, sustain = 1, amp = 0.03|
        var sig;
        sig = LFPar.ar( freq * [1,2,3,5], 0, amp/[2,4,5,7] );
        Out.ar( 0, Env([0,1,1,0], [0.025,sustain,0.025]).kr(2) * sig.dup )
}).add;
);