Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:3/8=120
M:6/8
K:A
['e3 c2 d ecA F2 E FGA', 'ecA fdB ecA F2 E FGA E2', '[CE]2 [CE] [DF]2 [DF] [CE]2 c d2']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:A
 e3 c2 d | ecA F2 E | FGA E2 c | d2 c B2 A | e3 c2 d | ecA F2 E | FGA E2 d | cd B A3 :: ecA fdB | 
 ecA F2 E | FGA E2 c | d2 c B2 A | ecA fdB | ecA F2 E | FGA E2 d | cdB A3 :: 
 [CE]2 [CE] [DF]2 [DF] | [CE]2 c d2 c | Bdf ecA | G2 A B3 | [CE]2 [CE] [DF]2 [DF] | [CE]2 c d2 c | 
 Bdf efd | cdB A3 :|  