Husband/wife shared iTunes but different Apple accounts on different devices

Question

My husband and I both have iPhones but our own laptops and ipads.  We've been sharing one itunes and apple account.  We haven't used the cloud, because that would combine our calendars, contacts, etc.  The itune/apple account is associated with my email address.  I've created him an apple account this morning, but now I'm stuck.
He doesn't want to use his own itune account, all his purchases are on our shared one.  We want to put his apple account on his phone, laptop and ipad, but when I tried to log into his apple account on his phone, it won't let me get past the credit card number for itunes.  We do NOT want to use this for his itunes.
How can I attach his phone to his apple account, but keep itunes separate?
He has a PC, iPad and iphone.  I have a Mac, and iPhone.
I've found instructions here on the apple site, but doesn't address the itunes issue.  I don't want him to lose his music and apps that he's already purchased.
Bottom line:  How can he access 2 different accounts:
He wants to use his own apple account for icloud, contacts, mail, and calendar
He wants to keep using iTunes on my account.

Answer 1

Welcome to the Apple Community.
That's easily done. iTunes and iCloud are different services, you can sign in to each with seperate ID's if you want on the same device. He'll probably want to sign in with his own Apple ID for messages and FaceTime too, which are also seperate services.