Enna has 29 original songs/covers on her channel:
Playlist
But like everything in niji, getting permissions for anything takes
forever. On top of that, she is a perfectionist that prerecords harmonies for songs she will sing to make them sound better. All of this takes a lot of effort, making her karaokes quite rare.
Her most recent one was the
Nier concert. She had to commission all 10 songs from scratch. She prerecorded a lot of harmonies again, got custom backgrounds and everything. It took 10 months to prepare everything. Sadly it released in the middle of all the drama, which pulled the numbers down a lot and earned it a ton of dislikes. If I was her I would be pretty upset about it, because quality wise the concert/karaoke was top notch.
Nijisanji is really wasting her skills and talent here. Sometimes I do wonder what she could have achieved if she were in holo...