In reply to Robert Durran:
So I've been experimenting listening to a lot of the above tracks while climbing and I have realised that a lot of the tracks unconsciously make me overgrip or climb faster than I should.
At the moment I am enjoying Rocket Man by Elton John. It has a strange suffusion of uplifting rock and roll energy and calm.
In one sense I love the impact music has on my psyche to try hard but also that there can be too much of a good thing, and as others have said, sometimes silence can't be beat.