Horrible audio quality on some video recordings on Samsung Galaxy S6 Edge. HELP!!!

[kellit71]

I go to a lot of concerts, and occasionally, I want to record a song or two. Recently, I went to a show and recorded 3 videos. When I got home I was excited to play the videos back but was VERY disappointed. The video quality was great but the audio was unlistenable. It was complete static with the exception of some drum sounds. It sort of had a feedback quality as well and it sort of sounds like it did back in the day when our giant speakers were going out! I've got a show coming up and I'd really like to record a song or two. I see similar videos and they all sound great. What am I doing wrong? (Note: this ONLY happens with live music).