What goal is in mind may make a difference as well.
Is the goal playing something "complicated" or extremely fast, or having lots and lots of notes to play perfectly? Is the goal playing something pleasing to kids? Is the goal "success" in playing whatever music you are playing?
An example comes to mind. Anyone ever hear Randy Newman perform the theme from Toy Story? There's an example of a song that was sung by someone who doesn't even come close to Pavarotti in vocal abilities, someone who doesn't play the piano in big flashy ways like Liberace, and yet millions of kids (and a fair number of adults) find themselves with that tune running through their heads, just like Randy sand and played it, with lots of YouTube tutorials on how to do it just like Randy did it. Would that qualify as "advanced"? The kids don't care one iota.