The striped cat didn't show up again, so I'm more inclined to believe she has had a litter of kittens. The gray cat visited, ate a bit, and then vanished. He's probably looking for his girlfriend. If he discovers kittens, he'll probably kill any males among them first chance he gets. He won't be wanting any rivals for this valuable territory with its attentive human staff. As for the striped cat, I'm not expecting to see her for another day or two. When my cat had kittens, she didn't go outdoors for about a week, and didn't even eat anything for the first couple of days. I'm not sure how far away the striped cat might have nested, but she won't want to travel far from it even to get food. She might just live on what she catches for a while. If she does show up here, she gets canned food.
One of the hugely popular songs of the 1920s and 1930s was Layton and Creamer's "After You've Gone," which ended up being recorded by everybody from Bessie Smith to Bing Crosby. On YouTube, I stumbled upon this version by Jelly Roll Morton, which is one of the most interesting I've ever heard. It can't have been recorded later than the 1930s, but there's something decidedly bop about it. I haven't been able to find out who his sidemen were on this recording, but there's some wild horn playing there.