If the goal is “come see the community center and see what we have to offer, meet your neighbors, have some free coffee and tea”, then that’s what you should go with. Are you just trying to get more people into the community center doors? Have you gone out into the community you’re trying to attract and ask them what would make them more willing to participate? Do they know this event exists and aren’t interested or do they have no idea the event exists. (I’m in Seattle and if you have free coffee and tell people about it they’re gonna show up. They might debate about the cup you’re serving, but they’ll show. :^> )
I, personally, would respond to a flier at my local library that told me there’d be a free coffee and tea day at the community center (with a small map of how to get there from the nearest major cross streets) and people were encouraged to bring whatever they’re currently reading as a conversation opener.
I have also responded to “come meet your neighbors and help clean up the neighborhood park”, but that’s me.
I love live music, but I’d caution that maybe people want to talk with other people at a community center coffee and tea event instead of listening idly. It also may not encourage people to look around at what’s happening at the center if they’re just sitting.
It also may help to be sure you have someone greeting and engaging people as they do come in. Even if it’s one or two people coming the first time you want to make them feel welcomed. (I wouldn’t refer to “no one” coming to the one or two people who did come, because that’s a sure fire way to ensure that they won’t come back.) If they leave there happy that they came they’ll come again and tell more people. They also may have a better idea about what would draw their neighbors than we do since they’re physically there, know how hard or easy it is to get there, know where the center is compared to other things in the community, know what’s lacking in the area, etc. They’re more likely to tell you their ideas if you ask them in person and not filling out a comments card.