Trouble

'Trouble' achieves its emotional weight not through harmonic complexity but through precision and restraint. The single most distinctive element is the ♭VII (F major) borrowed chord: its recurrence throughout an otherwise diatonic progression gives the song a wistful, tonally unanchored quality that suits a lyric about guilt and remorse. At 70 BPM in a piano-and-sparse-drums texture — the snare explicitly mixed low per Ken Nelson's production account — every chord change is exposed. The beginner-level vocabulary (Am, F, C, G) is deployed as a deliberate minimalist choice: harmonic simplicity forces all expressive weight onto Martin's falsetto and the silences between the notes, making the song feel emotionally larger than its four chords.

According to Chris Martin, the song grew out of his own behaviour during a difficult period within the band. He described it as being about behaving badly towards somebody you really love, admitting he was doing exactly that to some members of Coldplay at the time. All four band members — Chris Martin, Jonny Buckland, Guy Berryman and Will Champion — are credited as co-writers.

Released on 23 October 2000, 'Trouble' was the third single from Coldplay's debut album Parachutes and became the band's second UK top-10 hit, peaking at number 10. Written by all four members and co-produced with Ken Nelson, its sparse piano-driven sound and confessional lyric about behaving badly toward loved ones helped cement Coldplay's early reputation for emotive, understated British rock.