The mark is a sound. The mark consists of a piano striking and holding a chord comprising the pitches D2, A2, and D3. There then follows an upwards arpeggio with a sixteenth-note triplet rhythm performed by a bell-like synthesizer that sequentially plays the pitches G4, A4, D5, and E5, culminating with the pitch F#5, which is then sustained. All of the pitches in the arpeggio in question are "doubled" one octave higher. The mark ends with a final, low D performed with a synthesized, contra-bass sound.