Compare and contrast

I'm back at Leeds revising for the exams I've got this week, so I spend a lot of time listening to the radio. Here's an instructive review of my reactions to two new tracks:

On hearing the new U2 song for the first time: Hey, this is rather good.
On hearing it for the second time: OK, I'm bored of it now.

On hearing the Kaiser Chiefs's new song "Ruby" for the first time: Hey, this is rather good.
On hearing it for the third time, I was dancing around my room singing along. Now that's catchy.