synth sounds used in i'm good by clipse?

[jaydizzy]

im wondering 2 instruments that neptunes made

you can hear pitch moving brass and main synth melody

i dont know how neptunes did it.

i think brass section is made by vibrato-saw

and also main synth is made by low pass saw.

but i cant get same feeling and same details

anyone who can teach me how to get those sounds?

thanks!!