I guess if you wanted to know for sure, you'd have to compress the sample to be the same size as the others, mod it back into the game, and then see if it makes a difference.
I'm very interested to know if that's reused Ashley art, or a redraw specifically for the piece. If the latter, it proves that Rhythm Heaven Groove and WarioWare's artstyles are one and the same these days.
As well, it's interesting that either...
Saw this on social media, and it's apparently the Li’l Miss Reeds on the Weekend image for this Sunday:
Yeah, that's Ashley in a Rhythm Heaven post on Nintendo Today! Pretty neat, huh?
God I still remember this article I wrote years ago. It basically led to me creating Wario Forums:
https://gamingreinvented.com/feature/why-doesnt-the-wario-series-have-a-dedicated-fanbase/