Yeah, I do this. Most of the time it's voluntary, and, unlike my NT friends, I do actually remember the instruments, drum beats and lyrics. They think it's weird, but now... maybe it's just aspie? IDK. Most of the time I sing it out though, I'll try and keep it in my head and I'll find myself humming and grooving in the middle of an assessment. It's...
a bit embarrassing.
You mean to say that N.T.'s <i>don't</i> remember the whole song? I thought the ability to do this was just natural, something that everyone could do.