Idea: Generative music Tarot bot

There are 78 cards in a standard deck of Tarot made up of two arcana which are the major arcana and the minor arcana. Each card is assigned a corresponding note, i.e. The Magician = E; High Priestess = G#; The Empress = F#; The Emperor = C; The Hierophant = C#, Four of Wands = C / F# and so on.

When you make a spread, for example a classic Celtic Cross that consists of 10 cards, the app would generate musical sequence based on notes of each card in the spread. Thus each Tarot spread combination would acquire a unique sound signature.

For example:

Additionally for each individual pattern users can choose instruments, ambience, drones, etc. The app would also try to automatically generate the most harmoniously sounding combinations (out of the 10 given notes).

Alt idea: Measures of Happiness

I really like the idea of measuring happiness across countries in an attempt to spark interest in using the emotion as metric for public policy. Here's an article about NYU's graduate student who set about baking the happy Index into cupcakes:

What i don't like is the medium chosen as it doesn't accurately reflect the country's data.

A better way to conduct the experiment would be to use a special app that would allow people to rate their daily moods using their mobile phones, i.e. sliding a bar between "plus" and "minus".

The ratings then would be automatically uploaded to a special website where the data is analysed and displayed in a personal timeline (a graph). Also, people could enter tags and upload pics. When online they can easily access any day of their life by simply clicking on the graph.

The app should be freely available in every country of the world.