Together they have written for the biggest names in the music business from Michael Jackson to Rhianna and they have more than half a dozen grammy nominations between them.
The American hitmakers Claude Kelly and Chuck Harmony have in recent years also carved a reputation for their own band 'Louis York' named after their home cities of East St Louis and New York.
The pair are in London for a gig this week and to announce details of a debut album, they've been speaking to Tanya