#2
Definitely different. Can't quite pin what inspirations could be had from this. Differing paces and softness/mellowness working together well
#4
Well, 0:38 for example starts a stranger syncopation.

0:50 has the first parts of a certain Metallica song. 1:02 has a differing part. 1:39 goes slower than I thought it would, just predicting. So on and so forth