Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:3/8=100
M:6/8
K:A
['f2 e d2 c dfd cec', '(c/d/) (ecA) (fdB)']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:A
 (A>BA) (f/g/a)g | f2 e d2 c | dfd cec | BBB{c}"^tr" B3 | (Ace) a2 g | f2 e d2 c | dfd cec | 
 AAA A3 :: (c/d/) | (ecA) (fdB) | (ecA) (aec) | (fdB) (ecA) | BBB B2 (c/d/) | (ecA) (fdB) | 
 ecA a(gf) | (efd) (cdB) | AAA A2 :|  