I just listened to both and it wasn’t either of them sadly. This one faded in the “Vrei sa pleci dar nu mă, nu mă iei” on repeat, starting at a volume so low that you question whether or not you actually hear it the first time and it gets louder with each repeat. I feel like it repeats 4 or 5 times before the song continues.

A remix version of Dragostea Din Tei, aka the Numa Numa, where the artist faded in part of the song a couple of times in a really interesting manner. I found it on limewire back in the mid 2000s and lost it in a reformat. Haven’t found it since.