"Ok,*smiles* besides Ludwig, because we already know he does, do any of the Koopalings play instruments, if so, which ones? I play the acoustic guitar BTW!" - glorious-porpoise2

Roy: I also play guitar, harmonica and I sing, your voice is technically an instrument. I also make music tracks and beats and stuff 'electronically' for my company, Roy's Smooth Sounds

Iggy: I can also sing, if we're counting that as an instrument

And there you have it, the short list of musically inclined Koopalings! If you have any questions, ask away!