10 signs you've been living under a rock #6

This one is going to frustrate a lot of you. The reason is that I, the person showing you all of this music and telling other people that they've been living under a rock have not listened to this band until 1 month ago.
It's Three Days Grace.
I'm running a bit low on ideas, but they have to be mentioned because of they are among the few bands in the genre that get up to about 60 million views. I mean, think about it. Most music that gets radio play and gets listened to by millions and millions of people is pop. And the people who view those videos are just there to make fun of it. So it's pretty cool that this band can get millions of views and be respected, which is what this segment is kind of about.
It's also so I can know about something than you do.

Three Days Grace has gotten a bit of radio play, so you may recognize these songs:
I Hate Everything About You: http://www.youtube.com/watch?v=d8ekz_CSBVg
Never Too Late: http://www.youtube.com/watch?v=lL2ZwXj1tXM
Animal I Have Become: http://www.youtube.com/watch?v=xqds0B_meys
Pain: http://www.youtube.com/watch?v=Ud4HuAzHEUc

Some more recent songs by them, which would actually be some of my favorites:
Misery Love my Company: http://www.youtube.com/watch?v=QkSASi_eN_k
Chalk Outline: http://www.youtube.com/watch?v=ePVErcAUzK8

And if you like them, which you do, here are some more songs:
Break: http://www.youtube.com/watch?v=_4VCpTZye10
The Good Life: http://www.youtube.com/watch?v=tzRk5EIHAoI
Just Like You: http://www.youtube.com/watch?v=04fQTmvFfGo
Home: http://www.youtube.com/watch?v=7NQ8OCcQ3LA

And because I don't know much about them, you can just go on Tumblr and see what you find. Do some learning about a band instead of studying.
*But...did the singers change? Because a lot of the fans are like "Is this Adam or Matt?" and I just....want to know...