If you are looking for specific types of pieces (e.g., faster, slower, more jazz-oriented), let me know, and I can help narrow down the best choices for your exam! Trinity College London Piano | Trinity College London
For older classical pieces (such as Bach, Mozart, or Beethoven), you can use the International Music Score Library Project (IMSLP). : Free and completely legal for music out of copyright. Trinity Grade 5 Piano Pieces Pdf