Examen Jose pena

{Mix.fill(2,{SinOsc.ar(EnvGen.ar(Env.new([100,400,100,600,100,800,100,1000,70],[4,2,4,2,4,2,4,2])),0,0.05)})!2}.play

SI HACES UN MIX.FILL Y NO LE DAS NADA EN RANDOM SE REPITE DOS VECES EL MISMO CODIGO.
{Mix.fill(2,{SinOsc.ar(EnvGen.ar(Env.new([rrand(100,400),rrand(100,600),rrand(100,400),rrand(100,600),100,800,100,1000,70],[4,2,4,2,4,2,4,2])),0,0.05)})!2}.play

({ var jose;jose=EnvGen.ar(Env.new([100,400,100,600,100,800,100,1000,70],[4,2,4,2,4,2,4,2]));SinOsc.ar(jose,0,0.05)!2}.play)


Profesora. Arme la variable. Pero no logre colocarla el mix.fill a la variable.