Several years pass, and your one woomy guitar act has expanded into a full-on inkling and octoling band featuring a female octoling vocalist, a female inkling pianist, a female octoling saxophone player, and of course, yourself. Your previously big fanbase has now expanded to the point to where your band is now a global sensation, something that was greatly aided by all of the remaining humans turning into female inklings.
You and your band then proceed to live out the rest of your lives creating songs and performing them for the cephalopod masses. Heck, you even gell in love with the vocalist and married her. You couldn't be any happier with how things turned out.
GOOD ENDING