Bazic is a pretty good alternative whenever Qkaraoke is fully booked, which happens quite often on weekend nights.
The song selection is up to par with the song selection at Q. It is pretty updated and includes both old and new songs in various languages.
The service is friendly enough. There is a buzzer in the room, so customers can get food, drinks, or technological assistance whenever they need it. Else than that, the staff are usually at the bar.
The downsides to Bazic are that the rooms aren't all too clean. In fact, I would go as far as to say some of the rooms are on the dingy side. The smaller rooms in particular are very badly lit, so it's difficult to read the song selection sometimes.