A briefly apologetic look came over Castiel's face when he realized he had still startled the man. He supposed maybe knocking on the door might have maybe been more appropriate, if somewhat less efficient. Still, Virgil hadn't seemed too shocked by it all.
"Not getting on well with your younger self?" Castiel raised a slightly curious eyebrow. It was interesting to see how these future people all gelled or not with their pasts. Some, like the former vengeance demons, seemed unphased by it all, while others, like Ben Winchester, used words like 'douche'.
He leaned over and glanced at the computer screen, spotting the first song he liked. With a faint grin, he lined it up before he leaned into the mic.
"Good evening Los Angeles," his voice was calm as he spoke, though with a touch more warmth than he had had a year ago. "My name is Castiel and it is my pleasure to be your host tonight. In store for you is a blend of classic rock music and some tales of the real truth of this great city we call home. I'd like to start with a personal favorite of mine."
With that, he leaned back, pressing 'play' on Alice Cooper's Poison before he smirked at Virgil. "So, your younger self?"