I watched Guardians of the Galaxy vol.2 on DVD. The pitch of "Brandy" and "Mr. Blue Sky" at the beginning sounded higher than how i remembered and I thought it's because of copy right issue or something but original soundtracks also sounded a bit higher. i played the song at the scene where the song was used at the same time and i found the DVD one is playing faster. I also remembered some of the songs in other movies sounded weird on DVD. is that normal? or is that the issue with the DVD player?