An old hollowbody-style acoustic guitar is sampled here as more of a percussive instrument. The strings are muted and strummed a few times as well. Uploaded by sean a.
I recorded the acoustic guitar with audacity, then added the fx with reaper. It is named 5pm because that was the time when i recorded it. In reaper i made 3 tracks of the same recording and added different fx to each one:track 1 contained reverb and flange with adjusted tempo. Track 2 contained a pitch delay doubler. Track 3 contained a resonant lowpass filter - low quality.
This is used by system of a down's co-leader daron malakian in the song suite pee. Making the harmonics sound on the guitar, just putting the finger close to the strings.
I generated a "pluck" with audacity at note 45, gradual decay, and reversed it. Maybe you could add this at the end of a song as a strange ending, to be cool or something.