Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:3/4
K:C
['(3g/a/g/ fd e2 c', 'c3 B/c/dB c2 e d/e/fa g2 e']  
X:1
L:1/8
M:3/4
K:C
 (3g/a/g/ fd | e2 c | d/e/fa | g2 e | (3g/a/g/ fd | e2 c | B/c/dB | c3 | (3g/a/g/ fd | e2 c | 
 d/e/fa | g2 e | (3g/a/g/ fd | e2 c | B/c/dB | c3 || B/c/dB | c2 e | d/e/fa | g2 e | (3g/a/g/fd | 
 e2 c | B/c/dB | c3 | B/c/dB | c2 e | d/e/fa | g2 e | (3g/a/g/fd | e2 c | B/c/dB | c3 ||  