MadReaper

Hi there! I'm currently studying music production and will start soon the legal side of the industry. This week I'm meeting up with a contact who has a roster of producers and such. My question is this: How does it work when I want to approach a producer/ production team to write songs with them? I would be co-producing and co-writing. What kind of deals exist for that sort of arrangement? I would be hiring them in a sense Off-topic: Also, I know of a lot of cases where songwriters/artists simply write with the producers/production team, and I don't think the producers charge anything by the hour- they just write and write- as if it was a songwriting team. All advice, feedback, and answers are appreciated! Thank you!!