Tar error: Broken Pipe

[Alaric at angeldustrial.com (Alaric)]

Hi, I was trying to back up a couple of my directerys but keep getting a
broken pipe error without any further discrition on whats broken, it creates
the file I want, and puts some of the dir into it, but ends with a broken
pipe error and I'm worried that I'm somehow using the command wrong and not
backing up everything I need to, has anyone ever seen this before or have
any insight? thanks!

-Alaric

oh yes, this is what I'm entering as my tar command:
tar -czvf /root/`date "+%y-%m-%d"`.tgz /etc /home /var/www/ /root

tar begins:

tar: Removing leading `/' from member names
lost+found/
boot/
boot/lost+found/
boot/grub/
boot/grub/grub.conf
boot/grub/splash.xpm.gz
*Snip*
and This is the end of the output that tar sends to me:
*snip*
home/documents/music/Rammstein - Asche Zu Asche.mp3
home/documents/music/Project Pitchfork - I Live Your Dream (Gary Numan
remix).mp3
home/documents/music/project pitchfork - eon-eon - steelrose.mp3
home/documents/music/Prince - you sexy motherfucker.mp3
Broken pipe