All the choices you made fit so well - the instrumentation, the style, tempo, and sound effects. I like the sort of walking tempo and groovy beat with the heavy bass plus theremin which nails the ghost vibes. The saxophone is a sure-fire way to add a cool factor. If a ghost could saunter, it certainly would to this song! Your time signature changes are particularly fun! I like your choice to keep the same beat and to simply add a beat with an interesting sound to fill the space. I particularly like that upward pop sound in the fifth beat of the second 5/4 measure! Your instruments are all balanced nicely and I like that the saxophone and theremin trade off from one ear to the other. Great job and thank you for sharing!
I also agree that ideas popped into my head much faster for the Fish themes, but I'm glad I pushed myself for the challenge of team Bird! It's really fun going up such a classic all-star line-up on the Fish team!