Music for a friend / sleep or calm

Here's some beautiful, quiet music for when you need something like that:

[media=https://youtu.be/3qrKjywjo7Q]
Camille Saint-Saëns, Le Carnaval des animaux, XIII., "Le cygne" ("The Swan").
Yo-Yo Ma, cello, and Kathryn Stott, piano.