Ten Zen Seconds – I started with this for meditation. I got the book and applied it in my life.
Meditation App – https://itunes.apple.com/us/
I was ready to step it up, so bought this app.
Here are some links to Kirtan Kriya and studies that have been done on it.
You can listen below or download here – Tune In-Kirtan Kriya – Tune Out.