Just a quick question...

I keep listening to Kenji's and Keiti's cover of Rolling Girl, and as I'm listening, it sounds off to me at points.
So I keep on thinking of making another version of the song, and I really wanna do it, but I'm not sure if I should use Kenji, Keiti, or both. o_o I'm also going to experiment with Kinetic Typography for the video, so I really need some answers, so I know what to draw.

Bumped to add something...

GIVE ME REASONS WHY, PLZZZZZ. I WON'T ACCEPT "Because Kenji and Keiti sound awesome together desu lOLOLO>l1oidjljdsi"

Use both:At some parts Only Kenji singing,at some parts Keiti and at parts them doing the duet.
Oh nvm,I see you already did that lol.