Go here for fixed Ayah 56:    • 055 Surah Ar Rahman by Mishary Al Afa...  
OR =    • 055   Surah Ar Rahman by Mishary Al A...  
For Tajweed videos, better explanation on Colors/Tajweed and to download the copy of Quran used in these videos go here: archive.org/details/QuranTajweedNoorehira