I don't want to talk to my grand parents
You don't like spending time with your grandparents?
She listens only to the music genre I'm not a fan of.
It's understandable to have differences from your relatives, but its petty to avoid talking to someone over their tastes in music. Instead, try to find a hobby you both enjoy together.
Granny is so annoying. I will find my own interests.
Instead of finding your own interest. Why not find both you can relate to. Then spending time your grandparents won't feel like a chore.