How did you make _that_ plucky sound in Got Some Money? 
i don't know which one you mean, because i have a lot of plucky sounds, but, usually the way to make them is you set the decay short and the sustain to zero. These controls can usually be found in a set of 4 controls called "Attack, Decay, Sustain, Release", sometimes abreviated to A D S R. Almost any sound can be turned into a plucky sound by adjusting these parameters. it adjusts how loud the sound is over time