The specific recording you mentioned, containing and Surah An-Naziat , is a popular compilation of his recitations from the 30th Juz' (part) of the Quran. Recitation Details
The file name you provided appears to be from an older YouTube rip (indicated by .flv ), likely part of a collection of his early "best recitations" that gained significant popularity online. Yusuf Kalo Surah An-Naba An-Naziat ‏ - YouTube.flv
This is the 79th chapter. It emphasizes the certainty of the Great Day and uses powerful imagery of the soul being taken at death to remind listeners of the afterlife. The specific recording you mentioned, containing and Surah
(also spelled Yousuf Kalo or Yusuf Kalu) is a well-known Quran reciter, famous for his exceptionally beautiful and emotional vocal style, which he began showcasing at a young age. The specific recording you mentioned