I think a good blog title should be something relatively short and easily remembered.
If you have to use a pun, use a subtitle you can change if necessary.
I agree. And I also agree with Thomas' other suggestion about using the name of a big cosmopolitan city.
So, I'll re-submit one I offered earlier, with a few variations on the theme...
The London MetroGnome
The London Metro Gnome (a play on the word metronome, which is obviously associated with music, and gnomes guard buried treasure, like the treasure of classical music)
and I'll add a subtitle, that continues the play on words of beat/tempo/area of journalism, so it might look like this
THE LONDON METRO GNOME
following the classical music beat with Pentacle Queen...
You can even sell T-shirts