First of all, do you know the types of music clearly:

1. The background music in Warcraft - this must be original by Blizzard, commissioned by a producer, or from within the company The music director did it. There is no doubt that in order for your own game to be on the market, it must obtain copyright certification - that is to say, the content inside must be absolutely free from plagiarism (well, of course in China, this thing is not perfect, CF and so on are flying all over the sky...)

2.Pica Show and Straw Barbie’s March of Warcraft. The background of Warcraft March is v3 from Jin Band. An original creation by the band. Straw Barbie and Pika Show used V3 for background production of the entire song.

3. The Overture of the Dead "The Dawn". The relationship between The Dawn and War3 is much smaller. It was a work written by a musician for WOW, and it was naturally given to Blizzard in the end. Blizzard also played The Dawn many times in its own concerts.

4. Most of the songs in other videos are borrowed background music.