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Test and improve your music theory knowledge with MusicQuiz! Challenge yourself across 4 categories: Chord Progressions - Listen to chord sequences and identify famous progressions like I-V-vi-IV (Pop), ii-V-I (Jazz), and more. All played with synthesized audio. Music Symbols - Learn the meaning of dynamics (pp, ff, sfz), tempo markings (allegro, adagio), expression marks (legato, staccato), and more. Intervals - Train your ear to recognize intervals from unison to octave. Two notes play sequentially - can you identify the distance? Key Signatures - Match the number of sharps or flats to the correct major key. Master all 15 major keys. Features: - 10 questions per round with 4-choice answers - Time bonus for fast answers - 5-tier rank system from Novice to Music Master - Track your progress with detailed history - Share your scores with friends - Supports English and Japanese Perfect for music students, aspiring musicians, and anyone who wants to deepen their understanding of music theory.