What does it mean if you can whistle to a song uve never heard and stream it in real time?

[mightywindr]

I can do it with a hyper detailed song ie many notes per second unpredictable notes I DO NOT KNOW WHATS COMING , and I can whistle to the music and sync with it. and whistle the song I never heard before that I cant guess ahead on because it isnt predictable enough thats fast paced and has many notes per second

It even starts coming out like a computer generated sound/whistle.

Is it just something our right brains can do? ie they are built for high speed high paced highly dynamic tasks?

Im amazed at the speed and ability to be dynamic and so accurate, to be able to react to something u dont even know thats detailed and unpredictable, evolution did a fantastic job at these really small time frames with regards to a highly dynamic detailed environment to respond to.

Animals can clearly do it too.