My best way to describe this is to listen to "Work Out" by J. Cole. That "doo doo doo doo doodoo" in the track is either from the older song I'm looking for, or sounds exactly like it. Same tempo. I heard it on the radio roughly 12-15 years ago in the US. Back then there were no lyric websites, so I would sit by the radio waiting for my favorites so I could write the lyrics down. Ever since I came across the J. Cole song, it has been driving me NUTS.