Derek Taylor to Elvis Costello in 6 Steps
- Derek Taylor produced I Wonder Who's Kissing Her Now
- I Wonder Who's Kissing Her Now was sung by Harry Nilsson
- Harry Nilsson sang Mother In Law
- Mother In Law was written by Allen Toussaint
- Allen Toussaint produced Elvis Costello's recording of Walking on Thin Ice
- Walking on Thin Ice was covered by Elvis Costello