Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
['B{cB}A(Bc) (de)(dB)', 'B{cB}A(Bc) (de)(dB)', 'BA G2{AG} FD (DC)B,C (Dc)BG (AF) D(E/F/)', '(Gc)BA G3/2(A/4G/4 FD) (DC)B,C (Dc)BG (AF) D(EF)']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
"^With expression" G | B{cB}A(Bc) (de)(dB) | c{dc}B(ce) (dB) G>A | B{cB}A(Bc) (de)(dB) | 
 cBG>G G3 (G/A/) || B{cB}A(Bc) (de)(dB) | c{dc}B(ce) (dB) G>A | B{cB}A(Bc) (de)(dB) | 
 (cB) G(A/B/) c2{dc} BA || G2{AG} FD (DC)B,C | (Dc)BG (AF) D(E/F/) | G3/2(A/4G/4 FD) DCB,C | 
 (DE)FD (Gc)BA || G3/2(A/4G/4 FD) (DC)B,C | (Dc)BG (AF) D(EF) | G3/2(A/4G/4) (FD) (DC)B,C | 
 (DEF).D G3 |]  