Thinking Out Loud

The harmony is heavily influenced by 1970s blue-eyed soul, specifically echoing the structure of Marvin Gaye's 'Let's Get It On'. While the core changes (I-IV-V) are standard pop, the constant use of the I/iii (D/F#) inversion and the sophisticated descending bridge elevate it above generic four-chord pop loops. The use of the ii-V-I in the pre-chorus is a hallmark of functional soul-pop songwriting.

The song was written in a single session in February 2014. Long-time friend Amy Wadge was visiting Sheeran's home; while Sheeran was in the shower, he heard Wadge playing a riff on his guitar. He ran out and suggested they write a song together using those chords. They completed the lyrics and melody in about 20 minutes, just before going to dinner with Sheeran's parents.

Blending soulful melodies with heartfelt storytelling, this 2014 smash hit became a global wedding anthem and a record-breaking streaming powerhouse. It showcases Ed Sheeran's ability to fuse classic R&B influences with contemporary acoustic pop sensibilities.