any book/website to recommend about music theory?

No, none, in early 2Ks I just skimmed the first ones Google told me to

Since we're on HN, I could suggest you to search "clojure music" on youtube. There are a few talks about a dude revisiting music theory from wave freq. all up to Bach all in a few pages of clojure code. Very Very very cool.

I guess the example assumes the data is already somehow in AWS. How is the total cost affected if I wanted to run this setup on a 10TB dataset?

Good luck to live on 600$/month

Very interesting. I like the dashboard look 'n feel. Are you using a pre-existing JS library for the dashboards or did you develop your own ?

Hey thanks frenchhacker. We made some modifications to gridster for the dashboards. It's a great library, check it out - http://gridster.net/.

Sounds interesting to me. I have a couple of side projects involving visualization and comparison of data from track and field events. My technical background includes Python, Java, Postgresql, Javascript. Unfortunately no iOS.

I run d1 track in college right now. Would love to talk about this with you if you want. milesrichardson@gmail.com