Earlier quoted context omitted.
Agreed I loved it! Right up until they turned it into a musical for some reason. Me and my wife call it "doing a magicians" when a TV show suddenly starts singing for no reason. But yeah up until that point it was great!
It's a whole thing. The Magicians was just following a trend that genre shows need a musical episode if they've been on long enough. https://tvtropes.org/pmwiki/pmwiki.php/Main/MusicalEpisode
The Magicians overdid it though. It's not a musical episode, iirc it's like 2 seasons
Edit: just to be clear, I still watched those 2 entire seasons, because the story is genuinely that good, plus I was invested. But I really wish they hadn't gone musical, it really messed with the mood of the series.