The first three episodes didn't have many songs, pretty much one-per-episode (and I don't remember "Bear Left Then Bear Write" having any numbers), but with the next one involving karaoke, I guess the next one will make up for the shortage of singing so far.
I've just now started thinking that this next one would be a good opportunity to include Wayne and Wanda. Could you imagine them trying to do karaoke singing only for that performance to be cut short (maybe the karaoke machine could just break down after the first verse)?
Looking at the pictures, I wonder if this will be the episode where Sam gets his crush on Janice. I noticed in one photo they are shown sitting at the same table. I also noticed in one of the promos, when The Swedish Chef sings, Sam opens his mouth, kind of looking appalled. But I wonder if maybe that's an out-of-context reaction shot. Considering how Uncle Deadly puts his hand on his mouth, I wonder if he's really making an in-love reaction to Janice singing (maybe her singing is what causes his crush).
It would be funny if Zoot played the saxophone while doing his karaoke performance (or if Lips played trumpet when he should be karaoke singing). Or if he picked a song with a prominent sax performance expecting the machine to display saxophone notes instead of lyrics.
I wonder how much of the episode will be karaoke-focused, considering part of the plot involves Kermit being mad when they don't show up for work after being up late singing (not to mention Fozzie getting into an on-air accident). I think I've read that there's at least three performances, but I think I read that there are more than those.