on the current Harmony cruise, they are listing "Pub Entertainment with Luca" every night.
It's likely just not there yet, I'm on 5/6 and they haven't posted anything for us besides the big shows.
They also have guitar with Jed (who is moving round the ship, never in the same place twice) and piano with Josh in Schooners except for one night when they have the "Gease" conductor (yes they spelled it Gease), Kevin, playing piano.
There's always one typo, on my last cruise they offered Cake Decortating.