Thanks birks - I wasn't sure if I was making things up but thought that I could think of a couple of likely tunes.
Sorry to hear about Shelley Blisters. Hope you get your run today.
Warm here at the moment - was 20+ when I went out for my run (only time available due to rearranged work and smt this afternoon). Unlike chickadee I found it difficult to raise my HR - residual tiredness from Sunday I imagine.