I think people search for music by thinking of a well know sound in whatever genre. Like I notice in Jazz people often look for something like Coltrane, Miles , Bill Evans or Chet Baker. Of course Jazz has a million great artist that sound different. Those are just some artists bunches of people know. S0 if you can think of someone well known that your tune is somewhat close too, that is good starting point. Even if you’re pretty far off I think it’s ok cause everybody hears things different anyway. You can just click thru the genre categories at Amazon and maybe find something similar. This really helps if your doing a genre you don’t really know much about. I did some Mariachi which I really knew little about so I went to Amazon and just matched up the tune and some of those Mariachi bands.