Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:4/4
K:G
['', 'dG (3GGG', 'Bc dg', 'bgaf dg{a}gf{^c} d2 Bc']  
X:1
L:1/8
M:4/4
K:G
 [Gd]2 |: [Gd]G (3GGG [Gd]2 cA | dG (3GGG FGAc | dG (3GGG [Gd]2{ga} ge |{g} fdcA{B} AGGB :| 
 dg g2 ag{a}gf | dg{a}gf{^c} d2 Bc | dg g2 af{a}ge | fdcA{F} G2 Bc | dg g2 ag{a}gf | 
 dg{a}gf{^c} d2 Bc | defg abag | fdcA{F} G2 Bc || dg g2 bgaf | dg{a}gf{^c} d2 Bc | dg g2 bg{b}af | 
 dcAB{d} c2 Bc | dg g2 bgaf | dg{a}gf{^c} d2 Bc | defg abag | fdcA{F} G2 Ac ||  