7 yrs now since he original post came in...not sure how relevant it is now. But the chanting is from Anuvaka (section) 1 of chapter 16 of the Upanishads (sacred ancient Indian texts). It's called the ShreeRudram. View this video with the transliteration and translation of the chanting at http://www.flixya.com/video/877104/Lord_Sa...m_First_Anuvaka
You may recall the familiar lines from the song at 00:24 secs in the video above.They read "Shiva sharavya ya tava taya no
rudra mridaya" which means crudely "Oh! Rudra! By favor
of your arrow, bow, and
quiver, which have shed their
anger and turned auspicious,
please render us happy" For an explanation of the ShreeRudram and detailed info : see http://shreerudram.com/ or http://www.s-a-i.info/special/rudra_6.html
OM Namah Shivaya!!