Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:2/4
K:G
['g>d ed BG AG/A/ BA', 'fd e>g fe']  
X:1
L:1/8
M:2/4
K:G
|: b2 g>d | ed BG | AG/A/ BA | GB dB | db g>d | ed BG | AG/A/ BA |1 G2 ga :|2 G2 Gb |: a2 af/a/ | 
 ba fd | e>g fe | df ab | a2 af/a/ | ba fd | e>g fe |1 d2 de :|2 dc BA ||  