Blue

Why it sounds this way

Blue is a sad chord progression that moves IVmaj7 – Imaj7 – ii7 – ♭VII (Fmaj7 Cmaj7 Dm7 B♭ in C). The feeling walks open · glow → home · glow → wander · mellow → rebel. The extra quality words (glow, mellow) are why the colors soften or spark: sevenths and sus chords never quite say the feeling in a straight line. That matches a small tip for this mood: minor chords lean on blue. That is why it fits a scene like “umbrella left at the station.” Play it on piano or guitar above, and switch keys if you want it higher or lower.