In the Wale tune I like how the repeating chorus blends in.
Guns and roses to hear how it deals with fairly fast paced rock music and the voice of Axl
The remixed Marvin tune. I have to preface this one by saying I'm not an audiophile and I don't pretend to be. This demo song is remixed and cleaned up, that all the "authenticity" goes right out the window. But what they have created sounds so good. They play his voice over his voice that makes it sound like a duet. Isolating the vocals, removing a lot of other melodies and increasing the size of the sound stage. I just love it.
Lil John get low - not the bassist tune by any means but will push the bass in most systems.
I generally like orchestral pieces to see if I can identify instruments. The Lindsey Stirling piece cause I also like a country sounding violin
Huey Lewis - not exactly sure if it is mid bass(not sure if it is all vocals) or what is creating it but I like how the vocals blend with it