This song was written in 2008 by Sachar Bar, a teacher in Sderot, where 90% of kids and teens ages 4-18 showed signs of post traumatic stress due to the rocket fire that Sderot has experienced more than any other city in Israel.
The video has gone viral in the past few days of rockets landing all over the country. In just three days, Hamas in Gaza has fired more than 300 rockets at Israeli civilians.
The song is called tzeva adom, color (code) red, the warning siren that sounds 15 to 60 seconds (depending on where you are in the country) before a rocket lands. That's the amount of time you have to get to a safe room or bomb shelter.
(Damage from rocket that exploded above a "pre-nursery" yesterday in Netivot, Israel)