After updating phone to IOS 8.4 I cannot see my ITunes music list

I updated the IOS to 8.4 in the last couple of days; I picked up a rental car and, noticing it had an ISB port plugged my IPHonse in. I tapped the ITunes Icon, but instead of seeing my ITunes library, I saw Apple Music (which I have NOT signed up for). The player in the car stated playing something from my list so it's somewhere, but I cannot seem to locate it. My master music list is located on my desktop which is currently being moved from one country to another,so I will not have access to it for awhile. Any info would be greatly appreciated.