Hey, Soul Sister

The harmony is deliberately minimal — a single four-chord palette rearranged between sections (ABABABА form). What makes the song distinctive is not harmonic complexity but timbral choice: those same chords, played on ukulele at a brisk 97 bpm, produce a warmth and lightness that defines the song's entire emotional identity. The chorus's IV–V–I–V reordering provides a mild climactic resolution — classic tension-then-release — reinforcing the uplift without departing from the beginner-friendly harmonic world.

After collaborating with Norwegian songwriting duo Espionage (Espen Lind and Amund Bjørklund) on the track 'Brick by Brick,' Train's lead singer Pat Monahan was eager to work with them again. He told them he wanted to write 'an INXS-y song,' and they began playing in that vein. Monahan wrote a melody and started singing, but felt the result wasn't quite right. Espen Lind then spontaneously picked up a ukulele — an idea Monahan initially met with disbelief — which immediately transformed the song. Monahan felt the ukulele made his words 'dance,' as if the lyrics were meant for that instrument. The song's imagery was inspired by Burning Man: Monahan had never attended the festival but conjured vivid mental pictures of women dancing around fires in the Nevada desert.

'Hey, Soul Sister' arrived in 2009 as the lead single from Train's fifth studio album, powered by an infectious ukulele riff and Pat Monahan's exuberant vocals. It peaked at #3 on the Billboard Hot 100 — Train's highest US chart placement — reached #1 in 16 countries, and was the top-selling song on iTunes for all of 2010. Its 11× Platinum RIAA certification and Grammy win cement its place as one of the defining pop rock singles of the digital download era.