The video uses many quotes from the Salaf (The predecessors, i.e first 3 generations of Muslims, the Sahabi, the Tabi'een and the Tabi Tabi'een).

Is Music Haram? - Ibn Kathir    • Is Music Haram? - Ibn Kathir  
Nasheeds - Haram or Halal?    • Nasheeds - Haram or Halal?  

All quotes can be found on www.sayingsofthesalaf.net
~Background footage by dreamscene.org~