Why is the sound not right? With singers? They need a larger microphone

I went for a movie and a concert and a stand-up event and I did not notice a sound problem but it could have been the music you were listening to

I was there 2 weeks ago and it sounded perfect.

Maybe

The acoustics resonate more for the instruments a lot more because they are a lot louder than the voices. But most loud music is that way in big theaters.

Yeah the sound was messed up at a concert I went to in September

The voice comes out pure. All sounds are original they cannot make it loud