From r/lostmedia : https://www.reddit.com/r/lostmedia/comments/18a4nqm/found_the_filthy_frank_kenya_song_has_been_found/

I couldn’t believe my eyes when I learned this. For a decade, no one knew the name of a song used in the singer and former YouTuber Joji’s (then Filthy Frank) video “How to Pick Up Women in 30 Different Cultures”. At 0:38 in Frank’s video, a 4 second long clip of a song plays. Since the video was uploaded in 2013, people have been searching for the name of it until no avail. Since 2019 or so, this song has been a holy grail of Lostwave songs, and has remained one of the most popular mystery songs since then. It was so obscure that even Joji himself has acknowledged the mystery after fans asked him for info about the song, stating, “Don’t know the song name, stop asking [me for it]!”

This mystery eluded people for years until just yesterday, when a user found it on YouTube. Here is nbduckman’s video detailing the search.

You can also listen to “Katonda Alinawe” in full on YouTube here.