We saw Paloma (well, Yzzy as Paloma) on the Ventura a few yeara ago and thought she was incredible. I wish they would do a few more modern tributes, just to add a bit of variety.
I agree, there seemed to be no variety when we were on Britannia: it was all older, despite it being a very multi-generational vibe on the ship. They need a good mix to get the party going so to speak. Having said that, the first time we went on Ventura 10+ years ago it was very "old" music, but the last few times I have found it much more diverse in music years and genre.