Some Nightclubs, Bars, Restaurants (NCBRs) have music but do not have dancing; many places nowadays are 'concert style', listening, spectating, watching, and not dancing - totally strange to me; but everyone marches (dances) to (or 'watches') their own 'drummer'. Today many music places that are much smaller than concert halls or theaters are also just for 'watching' and 'spectating', rather than dancing. Go figure.
NCBRs that focus on concert-style music aren't put on our GoDanceLB.com Calendar, except if they have a dance-style event. While a little dancing does occur at some concert venues (including some places with mosh pits), they aren't 'places to go dance'.
Since this is a dance-focused site, I also put Karaoke in the category of 'Concerts' - they are essentially amateur-concerts. Some Karaoke places in other areas are also Dance-cordial, and a few encourage dancing. I'm not digging into Karaoke places sufficiently to identify those; and I'm not listing Karaoke-only places that don't have any Dance or Dance-cordial nights.
If you're into Karaoke at all, you'll already be aware of Karaoke Scene, the free newspaper that is well distributed at Karaoke places, and which now has an improved online site (except that many Karaoke places/events in the Long Beach area are not getting themselves listed in Karaoke Scene, and some places that are long gone are still listed there).
At this time I'm unaware of any Dance-welcoming Karaoke place/event in Long Beach area; and would love to list, and go to, any that you might know.