Starts with a drum track and maintains a steady rhythm throughout. There's a Sixties spy movie feel to the central parts, with what amounts to a high organ reed on the melody. And of course the marimba. There's always a marimba.
You can find more of my music on Spotify, Apple Music, YouTube Music and other sites by searching for 'Jon Jermey', 'Thirty-Four South' or 'One-Five-One East'.