Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
Q:1/8=240
M:6/8
K:D
['A2 F A2', 'A2 d A2 F']  
X:1
L:1/8
Q:1/8=240
M:6/8
K:D
 A2 F A2 E | A2 F A2 D | B2 G A2 E | G2 F E2 D | A2 F A2 D | A2 F A2 D | B2 d AdG | FdF E2 D | 
 F2 D G2 E | A2 A GFE | E=cG E2 =C | G=cG E=CE | DED DED | DED DED || B2 G BdG | B2 G BdG | 
 A2 d A2 F | A2 d A2 F | B2 B AdA | G=cG E2 =C | F2 D G2 E | A3 AGF | E=cG E=CE | G=cG E=CE | 
 DED DED | DED DED |]  