In a recent study, people struggling with sleep problems were challenged to listen to classical music for 45 minutes before going to bed.
Eighty-six per cent found the music improved their sleep and mood after just three weeks of the new routine.
Listening to audiobooks did not have the same effect: only 30 per cent experienced a change.
The music is thought to calm our stress hormone, noradrenaline.
This soothes our night-time vigilance, allowing us to drift off to sleep.