Those samples aren't actually outside of the boundaries of 8-bit . It's using the DPCM channel on the NES,
Heh, I vastly prefer the sound of famitracker over GXCSS, even if it might be a bit harder to make I generally feel a lot more satisfied with the results and it's a lot more authentic to an actual 8 bit system compared to GXSCC.
That was the one I actually spent the least amount of time on funnily enough. It's a really straight forward song. But I'm glad you all liked it.