Reverberation

Often referred to as echo.  It results from recording within closed rooms in studios where the sounds echo off the walls and this is
recorded by high-fidelity equipment.  Sometimes this effect is intentionally amplified (e.g., John Lennon's Instant Karma).   The following spectrogram was produced from a clip of the song, Making Me Nervous from the Brad Sucks album.  Listening to it you will here the reverb in the voicing which highlights the theme of nervousness expressed in the title.

Play audio

Notice also the contrast between the longer contours of the voice formants versus the short duration percussive effects.  This is a good example of oppositions within music (see Dialectical Development of Music for more discussion).