
In The Sims 2, you can use the Microphone in Belladonna Cove, but it's not really a separate skill. This is very similar to the Singing Microphone that you get in The Sims 2 Apartment Life, but this time, Singing is an actual skill.
You can go to the playground and play basketball. You can enter the new Politics career, Food/Art Critic career and Social Media Influencer career. Apparently, the apartment building in City Living isn't really a real building like in The Sims 2 or a shell like in The Sims 3. You can meet your neighbors like in The Sims 2 Apartment Life and The Sims 3 Late Night, but The Sims 2 Apartment Life allows you to meet neighbors without a loading screen as they are on the same apartment lot and The Sims 3 Late Night at least allows you to enter the apartment building, press a button on the elevator and go up the elevator. I have not tried the Competitions yet, but they are a thing in this expansion pack. Like The Sims 2 Apartment Life, there are street performers. My Sim has joined a Cultural Festival and lit fireworks. You live in a modern city, very similar to Bridgeport from The Sims 3 Late Night or The Sims 2 NightLife or The Sims 2 Apartment Life.
I also made a checklist of all the things I wanted to experiment with this expansion pack. I just downloaded it for free yesterday and began playing it. The Sims 4 City Living Expansion Pack is currently on trial for the whole weekend.