Notes & Strings Trumpet 2"X2.5" Mini-On-A-Ring Size Laminated Flashcards For Trumpet Laminated Mini-On-A-Ring Size: 2"X2.5" - Don't lose a note! These 32 brightly colored flashcards are color coded by string. One side has a note and the reverse side has that note's name and an illustration of how to play that note. This laminated mini size is very popular with students. They fit into a pocket for easy instant practice anywhere.