I wondered this. Most Artists for one piece except Tackey and Tsubasa and Janne da Arc are all unknown mostly. Or it seems so.
What artist do you think would do a good opening or ending song for one piece? Or if they already have one you think would work then what is it?
I think AKFG aka Asian Kung-fu Generation would do a good song for one piece. Their new song Blackout which isn't out yet would be interesting as an ending theme. It feels way too mature and laid back for One Piece, so it'd be very interesting to see it contrast.
Otherwise I'd want them to do a rock song for it. I always wished their Loop & Loop song would have been an opening theme.
Bump of Chicken's Sailing Day should've been an opening for the anime ;_; ~ >.< not the movie
I think there should've been an insert song for the fight with Crocodile, that'd be interesting.