Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:G
['', '(3GDG (3BGB (3dBd (3gdg bgdB', 'FA (3DEF']  
X:1
L:1/8
M:4/4
K:G
 BA |: (3GDG (3BGB (3dBd (3gdg | bgdB cBAG | Fdcd Adcd | fedf ecAF | (3GDG (3BGB (3dBd (3gdg | 
 bgdB cBAg | (3fgf df ecAG |1 FA (3DEF G2 BA :|2 FA (3DEF G2 ga || bgdB GBdg | fdAG FAdf | 
 a2 ab (3c'ba (3bag | (3agf (3gfe (3ded (3cBA | (3GDG (3BGB (3dBd (3gdg | bgdB cBAg | 
 (3fgf df ecAG |1 FA (3DEF G2 z a :|2 FA (3DEF G4 ||  