Loosely connected
Ok, it is not my idea. In fact it is Sony's. A few years back they had a small gizmo called an eMarker. They only sold them in the states.
Basically it was a digital knot in a piece of digital string. You heard something on the radio, you hit the button and it creates a timestamp. Get home, upload these timestamps to your computer and view the playlists for the stations you regularly listen too.
You could then find the track you wanted.
I was thinking about it, less in terms of music more in terms of ideas and discussion on the radio (ok, radio 4). If I heard an interesting point being made, or an interesting idea i could tag it, get home in the evening and pull down the programmes that were playing at that time and jump to the spot i wanted (or maybe into a transcript?).
Then I could easily stretch out the time window i was interested in, maybe do more research etc.
just using a digital knot.
Ok, so not really feesible for backstage yet maybe, but if anyone wants to help me hack my eMarker to get the timestamps out (if it still works).
I think of it as being loosely connected, I don't need to be blasting off SMS tags (though a similar system could use SMS, if I send my digital knot 'home' I could easily focus into my time of interest).