An electric bass plays the harmonic of a single D note with overdrive that sustains for 1 second and ...
A single triangle long note.
An acoustic guitar playing a single E2 note.
A plucked cello note on G#.
A single high cello note on A.
A bell playing a short B1 note.
An irish flute playing a single C1 note
An acoustic guitar playing a single E note.
An electric guitar playing a single A note sustained.
A single spring mouth harp note.