Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:4/4
K:G
['GA B2 Bd BAGA BddB d2 Bd', 'g2 gage d2 gage d4']  
X:1
L:1/8
M:4/4
K:G
 GA | B2 Bd BAGA | BddB d2 Bd | efge dBGA | B2 A2 A2 GA | B2 Bd BAGA | BddB d2 Bd | efge dBGA | 
 B2 G2 G2 :| ef | g2 gage d2 | gage d4 | eaab ag e2 | agab agef | g2 gage d2 | gage d4 | 
 efge dBGA | B2 G2 G2 :|  