https://twitter.com/David_Wise/statu...61685360513024
This confirms some of the guitarists on DKC Tropical Freeze !
I'm kinda surprised to see the name of Kenji Yamamoto on that list but now that I listen back to "Big Top Bop", "Punch Bowl" and "Volcano Dome", it makes perfect sense ! Some of the guitars in those songs are very similar to the performances he did on the Excite Truck OST and Smash Bros. remixes for example.
Also, to jump back on the role Yamamoto had on the DKC Returns OST, I think he definitely composed and arranged some of the music.
I mean, just listen to these three tracks :
https://youtu.be/zWvnRsC23vE
https://youtu.be/K911vKN02WU
https://youtu.be/ZojSDnCOeJ8
It's almost as if they were taken straight out of Metroid Prime Trilogy's soundtrack.
And on the DKC Returns Rocket Barrel theme, one of its variation includes a very typical Metroid sounding choir :
https://youtu.be/___nXjPDST8
So perhaps he really did compose this theme !