An electric guitar picks the harmonic of a single D note with overdrive that sustains for 2 seconds and ...
A Warwick bass guitar sliding down on the D string.
A bass guitar playing a long D1 bass note.
An accordion playing a single, short D
reversed electronic piano
an acoustic guitar play a short melodic loop
High pitched electronic pop synth rhythm / arp sequence
Light and smooth happy jazz lick played at 133 BPM in the key of C