Search for "tags within range" possible?

[noisyneil]

Hi. I was wondering if you know of a way to search for tags like this?

Let's say I have many files tagged, "BPM: 50", "BPM: 75", "BPM: 112", "BPM: 124", etc...

Is it possible to search for: Tags containing "BPM" and a number between 70 and 120?

That search would return: "BPM: 75" and "BPM: 112"

Any help would be really appreciated.