Construct tunes that adhere to the specified chord alterations.
'C', 'G', 'C', 'Dm', 'G', 'Am', 'G', 'Am', 'Dm', 'G'  
X:1
L:1/8
M:2/2
K:C
 B |"C" cgge gcge | cgge"G" dBGB |"C" cgge gcge |"Dm" afge"G" dBG :: B |"Am" c{d}eAe ceAe | 
 ceAe"G" dBGB |"Am" c{d}eAe ceAg |"Dm" afge"G" dBG :|  