When you discover let us know.
I've done some research and I've come to the conclusion that Bertysolo is one single man ( this can be understood reading the description of his official youtube channel "BERTYSOLO" ) that sings over royalty free instrumental tracks. But for some reason, also when listening to the instrumental
version of certain of the tracks he covered, Shazam thinks it is listening to the Bertysolo version, and so he comes up as the author of the song.
This happens also to other tracks of him, other than the one you are talking about in this discussion, and some channels re-post the instrumental versions of the songs, but using the title Bertysolo gave to his version of the piece, and his name as the author. One example of a popular song used in various videos that is being mistaken for a Bertysolo track is Trapped by Quincas Moreira
that Bertysolo changed to Mama
. He actually gave the credits of the original song to the author, but if you search on the internet for Mama - Bertysolo
there are a lot of videos with that title, that in reality contain only the original "beat" without the voice of Bertysolo.