Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
Q:1/2=100
M:4/4
K:D
['[EG,]2 [EG,]2', 'C2 C2', '(GF) (GF)(ED)'  
X:1
L:1/8
Q:1/2=100
M:4/4
K:D
 [EG,]2 [EG,]2"_No key or time sigs in MS" (DE) (FD) | [EG,]2 [EG,]2 [EG,]2 [EG,]2 | (ED) CB, | 
 [EG,]2 [EG,]2 (FG) (FD) CB, C2 C2 C2 C2 A2 (GF) (ED) || 
"^2nd part" (Ac) (fc) Ac (dA) (GF)(ED) (FA) (dA) | FA Bcde E2 | FA (dA) BA GF GFED | 
 C2 C2 C2 C2 A2 (GF)(ED) ||"^3rd part" (dc) (dA) BA (GF) | (GF)(ED) E2 (ef) | (gf) (ed) (dc) (Bc) | 
 (dc) (dA) (BA) (GF) | (GF)(ED) CC/C/4C3/2 A2 (GF)(ED) |]  