Construct a musical piece using the designated motif and sticking to the alphabetical form presented.
X:1
L:1/8
M:2/2
K:G
['FGAF G2 FG AdcA G2 AG FGAg', 'dg g2']  
X:1
L:1/8
M:2/2
K:G
 G3 G FGAF | G2 FG AdcA | G2 AG FGAg | fdcA dBcA | G2 G2 FGAF | G2 FG AdcA | G2 AG FGAg | 
 fdcA d2 Bc |] dg g2 fgaf | dg g2 agfe | dg g2 fgag | fdcA d2 Bc | dg g2 fgaf | dg g2 a2 ga | 
 bgaf gbag | fdcA dBcA |]  