The ease of playing this key on string instruments is what makes it so common in popular music.

"Screaming hallelujah's, rejoicing in conquering obstacles. War marches, holiday songs, invitations to join the winning team."

This key is one of the more versatile keys I've heard, fitting in wonderfully in all manner of music, from calm jazz ballads to furious marches and even rock bands. This key is very common in pop music, even more so than in band or orchestra.