Seventh Chord Names Flashcard Sets. Great for Learning Chords (Minor, Major, Dominant and Half Diminished and Diminished Chords) 72 flashcards in all! Large Print and measure 3'' x 2''. Learn all your: Major, Minor, Half Diminished, Diminished, Minor-Major. & Dominant Seventh Chords Great for piano, music theory teachers and students. Designed and Made in Canada.