I was working on a session on garageband for about 2 hours and out of no where my macbook just crashed and shut itself down. It wasnt connected to the power outlet since I still had about 30% of battery life. so I dont see that being the reason. I lost everything I did in those 2 hours on garageband!!!!ugggg! can anyone help me figure this out?? Is there any way the session was saved? and if not is there an Auto save type function that I can do so this doesnt happen again? why would it just crash like that??? I didnt even press anything! I was recording vocals!