We got taught this in class.. to remember layer relationships for texture, think:
Dominant or subordinate
Active or inactive
Solo
Unison
Counterpoint
Call and response
Rhythmic unison
Imitation
Fills
Parallel Harmonies
Staggered entry/exit
Stabs
Style
DASI SUCC/RRIFP/HSSS
or
"Does he suck riffs?"