lines of thought

I'm on the train going home. Headphones on, Take 5 by Brubeck playing melodically in my ears. A woman boards the train at Strathfield. Her features, chiselled face, tanned skin and attire suggest she is South American. Most probably Chilean.
Anyway, she sits next to me and closes her eyes. Then, beyond Brubeck's dulcet tones I hear a humming. Possibly a lullaby.
Yes, the Chilean is comforting herself with a sweet lullaby.