Vanilla Twilight and Fireflies are both familiar songs here in America.
They are well known for being played WAY too much on the radio until it eventually killed them.
I did not know, however, that Adam Young who is Owl City was also Sky Sailing, until you said so a few days ago
Brielle and Youtopia are ok. But since Owl City's songs were so overplayed, I think I've lost taste for his music