A crappy little plug & play known as "Croaky Karaoke" was just added to MAME. In concept, the game is nothing more than a karaoke video played with some song covers played in that distinct "DDR Famiclone" style. Amusingly, four of the songs were licensed from Sony Music, leading to the console having a licensed NES cover of "Take On Me", of all things.
There's no microphone input or anything on this console, but the menu inexplicably uses a proprietary control setup; so I can't actually navigate the song selection screen in any emulator. As such, I attempted to extract the songs into individual ROMs; to my surprise, this worked perfectly for 13 out of 14 songs (the one exception being "Sing"). Each file has three songs built-in, running dominant as one of them (similar to the educational computer ROMs); however, zeroing out one or two sections of code will run the other song + video. The only caveat with the working files is that they do not emulate the sampled "clapping" sound effect, I am unsure if that's an emulation issue or an extraction issue. Download attached below.