Interestingly enough, there are two songs which sound very different when sung, but are almost identical.
The chorus of MBD’s Ko Ribon [Moshiach] (Sounds like its composed by Yossi Green, but I never looked it up) is exceedingly similar to the first part of Dedi’s “Ima” [Rotzo] (“There is a time I can remember…”) – just sung much slower. Anybody agree?