Ranma 1/2: Nettou Uta Gassen is a oVA anime that premiered in fall 1990.

About the production: the story comes from a manga, there are 2 episodes of about 25 minutes and its current status is "finished".

Its main genres are comedy and music, with themes such as Musical Theater.

On AniList, Ranma 1/2: Nettou Uta Gassen has an average score of 63%, an average score, and appears on 1,801 users' lists.

A two-part music OVA series never released outside of Japan featuring the main Ranma 1/2 characters. They appear to be having a music contest at a local TV station. As everybody knows, these characters can't get along for more than three minutes and hilarity and hijinks ensue. (Source: AniDB)

Official synopsis from AniList.