I'm a pilot of extraterrestrial vehicles. I think you earthlings call them UFOs. I'm not really human, I'm a human/alien hybrid

...by day.
I morph into human form and am a musician when darkness befalls the west coast of the North American sector of your planet.
I reside in Area 63; slangly referred to as "UN-Groomed Lake". (an inside joke amongst us pilots)
Now that you know that, I'll have to erase your memory and make you lose 9 minutes.