Just ran the demo.
I did a pitch shift of +4.
The track had guitar, drums and vocal.
Everything shifted. Even the drums

Which I expected.
Now I will say this, the sped pitched version was pretty clean (caveat: only listening on ear buds).
So then I dropped the speed to 80% (of the original). Still pretty clean. Upped the speed by 7%. Still pretty good.
Final analysis, pretty good tool to learn fast passages or to see if you like a tempo change.
It's $59. I'd pay $29 but no more.