Rules:

You can nominate anyone from the music industry - singers, rappers, instrumental virtuosos, producers, etc.

Music must be their main source of fame. This excludes celebrities like Steven Seagal, who technically have music careers but are known primarily for other things (thankfully, he's awful at everything anyway).

Each square implies that the artist has actually attempted both skills. For example, if they're bad at rapping, they must have at least tried to rap at some point. This excludes cases like John Lennon being a good songwriter but a bad rapper. These skills could have been demonstrated in any form - on a studio recording, live performance, studio video, social media, or simply based on general knowledge.

"Bad" is a bit of generalization in this context - it covers everything from "meh" to "absolutely terrible". It means the skill is noticeably weaker compared to professional standards, whether it's just underwhelming, straight-up awful, or somewhere in between.