You want the real Ranma chaos but filtered through a music competition where everyone's forced to stay in the same room long enough for it to actually matter. The OVA doesn't pretend the plot is anything but an excuse to watch these characters weaponize their worst instincts against each other, and the soundtrack backs every petty argument with actual hooks. It's the show at its most distilled: characters who will never change, trapped in a scenario that guarantees maximum friction, set to music that makes you want to hear it again.
The main cast of Ranma 1/2 gathers at a local television station to take part in a music contest. These characters have never been able to stay on good terms for long, and it does not take long for the event to fill up with comic trouble and antics. The two-part OVA pairs the franchise's familiar comedy with a musical focus, and it offers a light side trip for fans who already know the cast. It was never released outside Japan.