Spock raised an eyebrow at her elaborate greeting, taking note of her noting of the year. Two thousand and four. No AD or BC but then Edith Keeler had not used those designators either when they had been taken back in time, simply the number. So he felt confident in assuming that this was 2004 in the old Earth dating system. A quick calculation gave his own year as 2269. He would ensure he remembered that as it was likely these people would not understand the universal Stardate system.
"Fascinating," he said calmly. "Making the assumption that no one has yet been harmed then this may be some sort of elaborate... social experiment?"
His eyebrow quirked upwards again at her mention of the music. "Indeed? I had noted that two of the... songs were familiar. The crew are prone to bellowing them when they have over imbibed in the various forms of intoxicants available on shore leave."