I don't jump on bandwagons much, especially music ones. When everyone started going on about Imagine Dragons I let it wash over me, I hadn't heard them and for now they were not on my radar. The song 'Radioactive' started to get played more in my earshot - adverts, trailers and it became unable to not know about them.
Then I listened to their album. It's not left my most played list in the last two weeks.