Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/2
K:G
['Gged B2', 'G2 TgedB cBcd ea{b}a^g aeef Tgedc BcBA']  
X:1
L:1/8
M:2/2
K:G
|: Gged B2 (AG) | (3(FED) AD BDAD | Gged B2 (AF) | DEGA BG G2 :: TgedB cBcd | ea{b}a^g aeef | 
 Tgedc BcBA | Ggga bg g2 :|  