Apple has aired a new iCloud commercial, Harmony. It demonstrates how photos, iTunes and iBooks purchases and contact information is automatically shared across compatible devices. You even get a glimpse at my favorite feature: fiddle with an iCal event in one location and it's changed everywhere else.

It ends with the tagline "Automatic. Everywhere. iCloud." The spot is cute and effective, demonstrating iCloud features without being a pest about it. Plus the music is so darn catchy.