Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:2/4
K:G
['G>A GD EG D>G EA AG/A/', 'e2 Ae Ae f2 f2 Bf Bf']  
X:1
L:1/8
M:2/4
K:G
|: G>A GD | EG D>G | EA AG/A/ | BA AB | G>A GD | EG D>G | EA AG/A/ |1 BG GB/A/ :|2 BG GB |: 
 d>e dG | e2 e2 | Ae Ae | f2 f2 | Bf Bf | g2 g>e | dB AG/A/ |1 BG GB/c/ :|2 BG G2 ||  