Titanium

The harmonic distinction of 'Titanium' lies in its refusal to resolve to the tonic (Eb Major) during its most climactic sections. While the verses utilize a traditional I-V-vi-IV progression to provide stability, the chorus shifts to a IV-V-iii-vi loop. This specific sequence is highly effective in dance music because the iii chord (Gm) acts as a substitute for the tonic or dominant, creating a 'suspended' emotional state that feels both resilient and ethereal, perfectly mirroring the 'bulletproof' lyrical theme.

Sia Furler wrote the lyrics in approximately 40 minutes. The track was originally intended for Katy Perry, who declined because she felt it was too similar to her hit 'Firework.' It was then recorded by Mary J. Blige, whose version leaked online. However, David Guetta was so impressed by Sia's original demo vocals that he decided to use them for the final release, initially without her explicit consent as she was attempting to retire from the spotlight at the time.

Released at the peak of the global EDM-pop crossover, 'Titanium' transformed David Guetta into a household name and launched Sia into international superstardom. The track is celebrated for its perfect balance of vulnerable lyricism and explosive club-ready drops, becoming a definitive anthem of the 2010s.