No it’s on the lock screen all the time. I’ll go open it and close it all the way and it’s still there. I’ll do a restart on my phone and it’s gone for awhile. But shows right back up. I can see if I use that music app but I don’t. I’m about to delete it. But soon as I do I’ll need it.
It could also be Pandora which shows up on your lockscreen. The iPhone doesn’t differentiate:
The same song with Amazon Music, and the built in Music app:
You can’t tell which apps plays the song, it looks exactly the same.
So if you use Pandora, force close the app to remove it from the lockscreen.
You aren't crazy! It happens sometimes with my 6S Plus and the built in music app. I may not have the app open for weeks (I still close apps I am not actively using - I'm sooo 20th century) and suddenly it will show up on the lock screen[emoji848][emoji848]