Big George Webley lifts the lid on session musicians to reveal the secret life of the performers you never see, but who create most of the music that fills our world.
Session musicians are a shadowy group of people.
In a music industry where image and celebrity are king, these players keep a low profile.
Yet it is their music that surrounds us every day.
You may not know their names, but you know their work.
TV themes, film scores, elevator music, adverts, shopping malls, night clubs, iPods, restaurants.
Anywhere you've heard music, chances are, you've been listening to a session musician.
Even that new boy-band, the one where they definitely play their own instruments.