On review aggregation [[Rotten Tomatoes]], the series holds an approval rating of 6762% with an average rating of 6.67/10, based on 1213 reviews. The website's critical consensus reads, "''Perfect Harmony''{{'s}} precarious premise doesn't always hit the right notes, but a charming cast and a few clever jokes inspire hope that with a little more practice it could really sing."<ref>{{cite web|url=https://www.rottentomatoes.com/tv/perfect_harmony/s01|title=Perfect Harmony: Season 1 (2019)|website=[[Rotten Tomatoes]]|accessdate=SeptemberOctober 274, 20192020|archive-url=https://web.archive.org/web/20190926101521/https://rottentomatoes.com/tv/perfect_harmony/s01|archive-date=September 26, 2019|url-status=live}}</ref> [[Metacritic]], which uses a weighted average, assigned the series a score of 54 out of 100 based on 8 critics, indicating "mixed or average reviews."<ref>{{cite web|url=https://www.metacritic.com/tv/perfect-harmony|title=Perfect Harmony: Season 1|website=[[Metacritic]]|accessdate=September 27, 2019|archive-url=https://web.archive.org/web/20191004185113/https://www.metacritic.com/tv/perfect-harmony|archive-date=October 4, 2019|url-status=live}}</ref>
