Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:2/2
K:D
['FG AGAB Adfd B2 gf edcB', 'd2 cd edef gece dcde fd A2', '(3FG^G A^GAB Adfd Bdgf edcB', '(3cd^d e^def gece dcde fdAf (3gag (3fgf']  
X:1
L:1/8
M:2/2
K:D
 FG | AGAB Adfd | B2 gf edcB | AGAB AFDF | E3 D E2 FG | AGAB Adfd | B2 gf edcB | Adfa gecd | 
 eddc d2 :: cd | edef gece | dcde fd A2 | (3gag (3fgf (3efe (3ded | (3cdc (3BcB A2 FG | AGAB Adfd | 
 B2 gf edcB | Adfa gecd | eddc d2 ::"^version with accidentals" (3FG^G | A^GAB Adfd | Bdgf edcB | 
 A^GAB AFDF | E^DEF E2 (3FG^G | A^GAB Adfd | Bdgf edcB | Adfa gece | d2 dc d2 :: (3cd^d | 
 e^def gece | dcde fdAf | (3gag (3fgf (3efe (3ded | (3cdc (3BcB A2 (3FG^G | A^GAB Adfd | 
 Bdgf edcB | Adfd gece | d2 dc d2 :|  