How to shake hands is one thing; when to do so is another. When you first meet someone seems pretty general - but after that there's a lot of variance.

My impression is that the French seems to go in for shaking hands on meeting and parting each time, even if they expect to see each other the next daywhereas the English tend to only do it on meeting and on partings which are likely to be extended. Same goes for the Irish - but in addition, in the context of music, making a point of shaking the hand of someone who's sung a song you like is pretty common, and that's quite unusual amonmg the English in my experience.