With a show as wonderfully wacky and consistently bizarre as Doom Patrol, it's hard to believe that the Max original series hasn't had a full-on musical episode yet, but that remained the case until its fourth and final season. The season's ninth episode, "Immortimas Patrol," is packed with choreographed song-and-dance numbers as the team finds itself in the middle of Immortus' latest plot. With genuinely rousing and funny musical sequences, "Immortimas Patrol" is easily the highlight of the season so far and among the series' best episodes.
Source:https://www.cbr.com/doom-patrol-season-4-episode-9-review/