CONOVER, N.C. (AP) — Multicolored lights danced around private party rooms as music pumped through the speakers at WE Karaoke in Conover. The business has been up and running for around four months.

Sound quality is key, but even the budget-friendly models should deliver decent volume and clarity. Children may not be too preoccupied with how crystal clear their vocals are when shout-singing “It’s ...