Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:2/2
K:D
['AFDE FEDF (3ABA GB AF D2', 'afdf g2 fe dfed BAFG', 'FDDF ADDF (3ABA GB A2 de', 'afdf g2 fe dfed BAFG']  
X:1
L:1/8
M:2/2
K:D
 FG | AFDE FEDF | (3ABA GB AF D2 | fedf edce | dBAB =cABG | AFDE FEDF | (3ABA GB AF D2 | 
 fedB (3ABA GE | F2 D2 D2 :: fg | afdf g2 fe | dfed BAFG | (3ABA FA BAFA | A2 FA BAfg | 
 afdf g2 fe | dfed BAFG | A3 F GBAG | F2 D2 D2 ::"^Variations:" AG | FDDF ADDF | (3ABA GB A2 de | 
 fedf edce | dBAB =cAGE | FDDF ADDF | (3ABA GB A2 de | fedB (3ABA GE | FA D2 D2 :: fg | 
 afdf g2 fe | dfed BAFG | A2 fA A2 gA | A2 fA BAfg | afdf g2 fe | dfed BAFG | A3 F GBAG | 
 FA D2 D2 :|  