Fun fact: Making AVANNA sing in an American accent is actually pretty difficult due to the difference in the ways consonants and vowels are pronounced, despite American and Irish accents sharing the rhotic pronunciation of R. She might be able to better pull off a British accent of some kind than most American dialects
I tried making her sound totally American once, and in the end I was just like, "yeah, no, I'm not doing this" and came to the acceptance that Avanna is meant to sing in her native Irish accent haha