Assemble musical creations with the instructed chord shifts.
'F', 'C7', 'F', 'G', 'D7', 'G', 'C', 'G7', 'C'  
X:1
L:1/8
M:2/4
K:F
 c |"F" A>A Ac | A>A Ac | dc BA |"C7" G2 z B | G>G GB | G>G GB | cB AG |"F" F2 z ::[K:G] d | 
"G" B>B Bd | B>B Bd | ed cB |"D7" A2 z c | A>A Ac | A>A Ac | dc BA |"G" G2 z ::[K:C] g | 
"C" e>e eg | e>e eg | ag fe |"G7" d2 z f | d>d df | d>d df | gf ed |"C" c2 z :|  