Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:4/4
K:G
['G2 Gc Bdgb agfa gfgc BGBd cBAB', 'gfgb agfa'  
X:1
L:1/8
M:4/4
K:G
 G2 Gc Bdgb | agfa gfgc | BGBd cBAB | cedc BG G2 :| bagb adfa | gfgb agfa | bagf gdcB | 
 ecdc BG G2 | bgfg dgfa | gfgb agfa | bBaB gBfB | cedc BG G2 ||  