Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:6/8
K:G
['', 'BGB d2 d ded fed cBA']  
X:1
L:1/8
M:6/8
K:G
"D7" DEF |:"G" GFG BGB | d2 d ded |"D7" fed cBA |"G" B2 G"D7" DEF |"G" GFG BGB | d2 d ded | 
"D7" fed cBA |1"G" G2 G DEF :|2 G3 |]:[K:D]"A7" AAA |"D" A2 A ABA |"A7" GFE"D" F2 D |"D" A2 A ABA | 
"A7" ABc"D" dFG |"D" AAA ABA |"A7" GFE"D" F2 D |"D" ABA"A7" GFE |1"D" D3 :|2 [DD]ED =CB,A, |]  