Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:A
['E A,2 C E2 A']  
X:1
L:1/8
M:6/8
K:A
 E |"A" A,2 C E2 A |"D" FED"A" E2 D | (CB,)C"D" A,2 A, |"A" A,3 z (CD) |"E" E2 E B2 A/G/ | 
"A" A2 C"D" D2 E |"D" F2 A AGF |"E" E2- E z E | E2 E"E7" (BA)G |"A" A2 C"D" D2 E |"Bm" F2 A (AG)F | 
"E" E2- E z E |"A" A,2 C E2 A |"D" (FE)F E2 D | (CB,)C A,2 A, |"A" A,3 z2 |]  