Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
M:4/4
K:Eb
['B, E>F (E/D/)(C/B,/) CFF>G EB Ge Bg', 'B e>f']  
X:1
L:1/8
M:4/4
K:Eb
 B, | E>F (E/D/)(C/B,/) CFF>G | EB Ge Bg eb | E>F E/D/(C/B,/) CFF>G | B,>E (E/D/)(C/B,/) E2 E :| 
 B | e>f (e/d/)(c/B/) c(ff>)g | egce Be GE | e>f e/>d/c/B/ c(ff>)g | (e/>d/)c/B/ cd e2 e B | 
 e>f e/>d/c/B/ cff>g | egce Be G>E | Ac GB CFFG | C>E E/>D/C/>B,/ E2 E ||  