This is beautiful music, great for kids 10 and up. I don't think kids younger than that are old enough to experience feelings of sexual attraction, or separate their love for their family or friends from other 'types' of love. (the type that usually results in kissing/marriage/sex etc.). These songs are beautiful and probably the best music ever when you're at an age when you're experiencing the same thing. Plans (or any other dcfc album) is definitely worth buying!
Plans, so far is Death Cab for Cuties most known album, it features songs like:
Crooked Teeth, Soul Meets Body, and I'll Follow you into the Dark.
It's a good album and worth buying.