The score to 9 to 5 is something that is constantly listened to in my world. It is light, frothy, and fun. It's not South Pacific or Gypsy, but it's a great listen.
I do remember hearing something that Stephen Oremus "wrote" a lot of the score, in the same way that Glen Kelly "wrote" the score to The Producers. Oremus is listed on IBDB as doing the following for 9 to 5:
- Incidental Music Arrangements by Stephen Oremus
- Additional Orchestrations by Stephen Oremus
- Musical Director: Stephen Oremus
- Conducted by Stephen Oremus
- Vocal arrangements by Stephen Oremus
- Keyboard 1: Stephen Oremus
Now, he also did the same jobs (minus incidental music) on Frozen, The Book of Mormon, and (all less conducting, incidental, and keyboard 1) for Kinky Boots, Wicked, Avenue Q, etc. So, to go by just that, I can see that he probably did a bit more, but when you boil it down, the score is classic Dolly. On her album, Better Day, she recorded 4 numbers from the show and they are done as if she was the original performer and they fit seamlessly with the rest of her album. I'm thinking that she wrote the songs, and Oremus added "Broadway seasoning" to them.
Also, I didn't love the new song...then again after listening to the London cast recording only twice, I am scraping to remember anything about it.