I remember watching this cartoon, way way way long ago back when I lived in NYC. I was in kindergarten and we took a field trip to some kind of recording studio (weird place to take a field trip) and our class actually got to watch a cartoon get dubbed into English live. Our whole class sat down on these bleachers, and we got to watch the cartoon projected live on the screen and watch the woman do all the voices. From what I remember, the one woman did all the voices (we got to watch her do it), and it had a whole bunch of anthropomorphic musical instruments. The main one was a bass, and there was also a cymbal I think, and there was a drum and a few other ones. I think the plot was that the instruments gradually met each other, and discovered that when they all play together, it sounds good and makes a song. At one point, I think the drum character felt left out, and then the bass was like "Well why don't you come and join us?" and then they all played together and that was basically the end of it. I think I saw it around 2005 - 2006 and it was in NYC. I don't remember what the cartoon was called.
I think that there's one more 1997 demo, which is where that screenshot is from. The 1997 one we have now does start off as a continuation. You can even hear the dad talking in the background.
I have recently contacted Tom Lynskey, and he was able to send me both the Lego Lusitania movie, and the lost deleted scenes from Lego Titanic!!! Here they are: