IndexError: tuple index out of range

[cloudz-0]

Im doing an assignment where I have to create a monophonic additive synthesizer and I keep reaching the issue index error. I'm not sure how to fix it. This is my first time using Github as well so i'm not sure if im doing this right. I have my code below and I think the issue is with the dimensions of the array and then trying to play it through sound device but i'm not sure how to resolve this issue.