Im learning to play the piano and currently getting ready to take grade 5 exam in the abrsm.

If all I want to play is rock and pop music out of books and maybe join a cover band later on,at what point do you think I would need to get to in the grades for piano?

I've looked at a lot of music written in books that cover Ballads,love songs,rock and pop and compared to the exam pieces at grade 5 they dont look much more complexed.

Any suggestions I would be very greatful.Thankyou.