Craft a musical work utilizing the specified alphabetical formation and given motif.
X:1
L:1/8
M:4/4
K:G
['FAAG FADF GBBA GBdg fgaf', 'gb b2']  
X:1
L:1/8
M:4/4
K:G
 GB BA G3 A | FAAG FADF | GBBA GBdg | fgaf gedB | GB BA G3 G | FAAG FADF | GBBA GBdg | fgaf g3 f || 
 gb b2 affg | agef gede | gb b2 faag | agef g3 f | gb b2 affg | agef gede | g2 bg faag | 
 agef gedB ||  