Taking a different twist on the ninja/pirate battle. I decided the pirate had to be on the electric bass. Also decided to go with the proportionate female form rather than the hentai extreme hourglass style.
Seems the ninja's hair should be coming out of the base of the mask, hard to spot as a ninja @ a glance. Just me, but maybe the pirate and ninja should be playing different genres, though anything with pirates vs ninjas is bound to be popular.