Create compositions based on the given chord modifications.
'G', 'D7', 'D7', 'G'  
X:1
L:1/8
M:6/8
K:G
 D |"G" G2 F G2 A | B2 B BAB | d2 d ded | B3 z2 :: B/c/ |"D7" B2 A ABc | B2 A ABc | BAB dcB | 
 Add dBc | |"D7" BAA ABc | BAA ABA | GFE DEF |"G" G3 z2 :|  