"Icebreaker" has an interesting idea behind it, but I can't help but look at it from my songwriter point of view and since the main interesting challenge in writing something like this is, obviously, making the change between different segments work, it kinda feels like unfinished. There have been many songs that change tempo/genre/whatever at some point during the song (for examples with a vague Eurovision connection, there's one of Darude's biggest hits "Feel the Beat" or even the ending of Grete Paia's "Päästke noored hinged") but most tracks like these bridge it someway that makes it more palatable to the audience. "Icebreaker" comes across like you had bits of two different pretty good tracks and just put them together with no effort to connect them whatsover, which is not too surprisingly jarring for a casual audience (especially on a first listen).
As for the point of the thread, I'd like to offer the breakbeat track from Bulgaria (Deep Zone & Balthazar - "DJ, Take Me Away", 2008). It's largely instrumental which not everyone is used to (I remember even ESCUnited's own Matt saying something like "when does it begin?" on a vid reviewing the Bulgarian entries
) and it seems to be a call-back to the early 90's songs like Prodigy's "Out of Space" which most people would probably miss. It still almost made it to the final though