Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:6/8
K:G
['GFG BcA', 'dBG g2 b afd cBc def gdg']  
X:1
L:1/8
M:6/8
K:G
 GFG BcA | BGF GBc | dBG cAF | GDC B,CD | GFG BcA | BGG fed | cAG FGA |1 BGF G2 D :|2 BGF GBd || 
 gfg afd | cBc dBG | g2 b afd | cBc def | gdg fdf | ece gfe | ded BcA |1 BGF GBd :| BFG G2 D ||  