Requesting some crazy (or not so crazy) theory here: it seems that Tremolo´s dad and Isabella have the same favorite song. It seems that there is some kind of big deal with that song. Tremolo´s dad played him that song in the radio when he was 12, Tremolo learned that song and played it for his dad´s birthday, and it´s also the song that sounds when Tremolo sees Isabella for the first time in the game.
Maybe DPC is trolling us with that song and means nothing, but I don´t think so. I think there is some kind of connection between Neil and Isabella through that song. Probably Neil likes that song because is related with Lynette, and maybe there is some kind of link between Lynette and Isabella, and Isabella likes that song because of Lynette too. After all, they are about the same age, Lynette was somehow connected with the Royces, and Isabella is connected too (I suppose she was a friend of the family or something when Jill was a child). People has talked a lot about the theory of "Aunty Jill", but maybe Tremolo´s relative one (not necessarily his aunt, probably other kind of kindship) is Bella. That would give a weird twist to Bella´s route.
Someone has exposed any theory about that here already?