Hello! Does your teacher mean you have to play the whole 1hr 15?!?!? Thats a long recital for a 15 yr old whose been playing three years! None of your pieces are 'bad' but soem of them you might think carefully how to place in a programme and you may well end up doing a group of Chopin etc. You have to be carefull that it doesnt sound like lots of short pieces so maybe a big sonata of Beethoven one (actually even something like Cmin variations) Or a big baroque work like a Partita or French suite or something (maybe a toccata). The Debussy is fine but short ! as twentieth C offering - I would advise either learning the rest of it (not too difficult) or sticking in a lively twentieth C piece to close with ie Prokofiev - Mercutio from Romeo and Juliet suite? the heroic pol would be a good one to do! Pour le Piano is good - do you play it all there is some pretty challenging music in the end - it would be a good recital piece.regarding a concerto - i would look at K488 and Beethoven 1 & 3 not too long and fairly straightforward technically (not easy - straightforward)