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:C
['G2 F E2 B', '(A/G/) (F/G/)AB (A/F/)ED']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:C
[K:G] G2 F E2 B | (B/A/)GF (G/F/)ED | G2 F E2 B |1 (B/A/)GF E3 :|2 (B/A/)GF E2 |: d | 
 d2 B B2 (A/G/) | (F/G/)AB (A/F/)ED | d2 B B2 d | (e/d/)Bd e2 d | d2 B B2 (A/G/) | 
 (F/G/)AB (A/F/)ED | G2 A B/G<dB/ |1 (B/A/)GF E2 :|2 (B/A/)GF E3 ||  