Teen Gothic

Sorry if wrong tag. She wants revenge has been my favorite band for a bit, I adore how they sound and do their vocals. Today I had the displeasure of hearing their live show and im genuinely so confused, I tried to find out if they use auto tune or something but couldn't find any info. I heard tear you apart in the live and it sounds nothing the same, not even a little bit…again im a new fan so there could be different singers or something but if anyone knows id love some info on them <3