Stella

Question 1

First 8 bars

Answer 1

iv - VII7 - ii - V7 - (Key of IV) v - I7 - IV - bVII7 (backdoor) (- I)

Question 2

Second 8 bars

Answer 2

I - #iv-VII7 - iii - i-IV7 (backdoor to V) - V - #iv-VII7 - vii - III7

Question 3

Third 8 bars

Answer 3

VI+7 - ii - (iv)-bVII7 (backdoor) - I

Question 4

Last 8 bars

Answer 4

iv-VII7 - iii-VI7 - ii-V7 - I