A single low E note picked on an acoustic guitar .
An electric bass plays the harmonic of a single D note with overdrive that sustains for 1 second and ...
An electric bass guitar picks a single harmonic of a D note with a short sustain and quick fade out with ...
The high C note played on cello.
A West African calabash harp or lute playing a single E note.
A single high cello note on A.
An electric guitar picks a single fretted E note with overdrive.
An electric bass guitar picks the harmonic of a single D note on the 7th fret with an overdriven tone ...
Plucked cello note with sustain.