Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:3/4
K:G
["(dg)(bgdg) b4 (bd) (c'd)(c'd) (a2 df)(afdf) a4", "(g2 dg)(bg).d.g (bg)(dg).b.d' c'dc'd (a2 df)afdf afdfac'"  
X:1
L:1/8
M:3/4
K:G
 (dg)(bgdg) | b4 (bd) | (c'd)(c'd) (a2 | df)(afdf) | a4 ac' | (bd)(bd) (g2 :| dg)(bg).d.g | 
 (bg)(dg).b.d' | c'dc'd (a2 | df)afdf | afdfac' | bdbd g2 :|  