The Invocation of Tapihritsa, sung by Lama Kalsang Nyima. The Tibetan chant is underlaid with subtitles. Then the text follows. This prayer of invocation was written by Gyer-pung Nang-zher Lopo, the main disciple of the eighth-century master Tapirhitsa.
This video also contains subtitles in English
The text is available here
There is the text also as audio in English: