At least, according to science sponsored by a soap company. 

The research, conducted by Dr David Lewis-Hodgson of Mindlab International tested various songs on 40 adult women. This one. The following presents a great playlist to sleep meditate by:

1. Marconi Union – Weightless 
2. Airstream – Electra 
3. DJ Shah – Mellomaniac (Chill Out Mix) 
4. Enya – Watermark
5. Coldplay – Strawberry Swing
6. Barcelona – Please Don’t Go 
7. All Saints – Pure Shores 
8. Adelev Someone Like You 
9. Mozart – Canzonetta Sull’aria 
10. Cafe Del Mar – We Can Fly