Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:3/2
K:D
['f fB f2 ef gf ed cB', 'cd B2'  
X:1
L:1/8
M:3/2
K:D
|: f | fB f2 ef | gf ed cB | cd ef e2 | ce dc B :| fB cd B2 | gB cd B2 | AB cd ed | ce dc cB | 
 fB cd B2 | gB cd B2 | AB cd ed | ce dc B2 ||  