I liked this spot a lot. The piano players were engaging bringing the crowd into the performance and getting people to sing along, which is very important. They knew all the songs, quick with the insults and little side banter, and played requests quickly. Top notch.
We found our way here after the Manilow show and grabbed a seat. Recommend to anyone interested to go around starting time, as it started to get really crowded and tables were scarce as the place filled.
Also, this is a great people watching spot. There was some drunk dude hitting on a girl, dancing and air guitaring it up in front of the crowd. The piano guys bet $10 he'd fall by the end of the night, and by golly he took a major spill with the girl about 30 minutes later. We saw 2 brides as well, really fun to see them and cheer them on during a slow song.
Definitely check this lounge out if you are in Paris around 9.