Unit 1 The Sound of Aa Track 1~3 Unit 2 The Sound of Bb Track 4~6 Unit 3 The Sound of Cc Track 7~9 Unit 4 The Sound of Dd Track 10~12 Unit 5 The Sound of Ee Track 13~15 Unit 6 The Sound of Ff Track 16~18 Unit 7 The Sound of Gg Track 19~21 Unit 8 The Sound of Hh Track 22~24 Unit 9 The Sound of Ii Track 25~27 Unit 10 The Sound of Jj Track 28~30 Unit 11 The Sound of Kk Track 31~33 Unit 12 The Sound of Ll Track 34~36 Unit 13 The Sound of Mm Track 37~39 Unit 14 The Sound of Nn Track 40~42 Unit 15 The Sound of Oo Track 43~45 Unit 16 The Sound of Pp Track 46~48 Unit 17 The Sound of Qq Track 49~51 Unit 18 The Sound of Rr Track 52~54 Unit 19 The Sound of Ss Track 55~57 Unit 20 The Sound of Tt Track 58~60 Unit 21 The Sound of Uu Track 61~63 Unit 22 The Sound of Vv Track 64~66 Unit 23 The Sound of Ww Track 67~69 Unit 24 The Sound of Xx Track 70~72 Unit 25 The Sound of Yy Track 73~75 Unit 26 The Sound of Zz Track 76~78
