[singer A] [sustained analog synth pads with slow filter sweep] [sidechain compression pumping effect] Oxygen... [melodic transition] [singer B] [Instrumental] Number 40 [melodic interlude] [singer A] [electronic kick drum enters] [16th-note arpeggiated synth bass] [gated reverb snare on beats 2 and 4] [monophonic lead synth with portamento plays melody] (Oxygen part 4) [instrumental] [singer B] [Instrumental] (Number 40 Symphony) [transition] [singer A] (Oxygen part 4...) [drums and bass drop out] [fading synth pad with long reverb tail]
