Construct chordal sequences to boost the harmonious coherence within the specified musical piece.
cc !>!c2 | AA !>!A2 | FA d>c | c2 B2 | BB B>A | GG G>F | EG d>c | F2 F2 :|  
X:1
L:1/8
M:2/4
K:F
"F" cc !>!c2 | AA !>!A2 | FA d>c |"C7" c2 B2 | BB B>A | GG G>F | EG d>c |"F" F2 F2 :|  