There are two songs that fit this category on Tutmonda Muziko (Conny Conrad)'s album "Esperanto":
Mia Muziko
Ŝi Klasikas, Mi Rokemas
Unfortunately this album is pretty much the only part of Conrad's back catalogue that isn't online anywhere, so I can't link to the songs - but here's my blog post about it:
Because it was the first thing to pop into my head, and very timely as it's #Eurovision semifinal 1 day, I feel I just have to go with the musical interval act (that counts as music, right?) on how to create the perfect Eurovision song: Love Love Peace Peace by Måns Zelmerlöw and Petra Mede:
Might not translate well to non-Eurovision fans, but it puts a big smile on my face every time I hear it, with its great mix of meta commentary on the contest.