Also, not to sound like a little kid, if any of you watch Adventure Time, (it's a cartoon show) a lot of their soundtracks sound similar to this as well. i wouldn't mind knowing where to find the soundtracks of that show.
For the soundtrack you might just wanna look that up on iTunes. To find music similar to the stuff you mentioned (because I don't know of any) use pandora and make a station based one of the artists you like.
What hes trying to say is take the artists you like and add them as a station on pandora. It will bring up songs similar to whatever artist / somg you type in. Also you can use iheart radio but Pandora has more music.
thanks about 8tracks, i'll check it out. and i know, imagine dragons isn't what i'm looking for i'm looking for that sort of sound that played at the start of the song. i listen to all these bands that people are listing.