Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
Q:1/2=90
M:2/2
K:G
['ABcA BGFG', 'd4 d2']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:G
 G2 A2 | BdBG AcAF | G3 D E2 cE | F2 dF G2 ed | cBAG ABcA | BGFG ABcA | BGFG Bd^ce | dbag fed^c | 
 d4 :: d2 e2 | fafd ege^c | d3 A Bdgf | ebag fed^c | d4 d2 (3(de=f) | edcB cBA^G | A4 c2 (3(cde) | 
 dcBA BAGF | G4 (3(GAB) DB | (3(ABc) Dc BGAF | G3 A Bdge | fafd ege^c | d4 G2 A2 | BdBG AcAF | 
 G3 D E2 cE | F2 dF G2 ed | cBAG ABcA | BGFG ABcA | BGAF GBAc | Bedc BAGF | G4 :|  