Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:G
['', 'Bc dcBA Ggfg e4 d4 cdcB ABAG', 'g2 gf'  
X:1
L:1/8
M:4/4
K:G
 Bc |: dcBA Ggfg | e4 d4 | cdcB ABAG | F4 E4 | DEFG A2 B2 | c2 de d2 c2 | BAGA D2 F2 |1 G6 Bc :|2 
 (G4 G) def |: g2 gf e2 ag | f4 d2 ef | g2 gf e2 ag | f2 e2 d2 ef | gddd gddd | gdgd gddd | 
 g2 gf edcB | ABAG F2 E2 | DEFG A2 B2 | c2 de d2 c2 | BAGA D2 F2 |1 (G4 G2) d2 :|  