Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['GE E2 cdef', 'ef g2', 'gedB cA A2']  
X:1
L:1/8
M:4/4
K:G
 BA | GE E2 cdef | gedB cA A z | GE E2 cdef | gedB c2 :| cd | ef g2 eaaf | gedB cA A2 | 
 ef g2 eaab | c'bag a2 gf | ef g2 eaaf | gedB cA A2 | GE E2 cdef | gedB c2 cd || ef g2 eaaf | 
 gedB cA A2 | ef g2 eaab | c'bag a2 ab | (3c'ba bg agef | gedB cA A2 | GE E2 cdef | gedB c2 ||  