Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:1/4=140
M:2/2
K:A
['e2 B2 df ecBA GBED CEAc', 'A2 A2']  
X:1
L:1/8
Q:1/4=140
M:2/2
K:A
 e2 | aecA"^tr" B2 df | ecBA GBED | CEAc EAce | aecA B2 e2 | aecA"^tr" B2 df | ecBA GBED | 
 CEAc dBAG | A2 A2 A2 :: A2 | GBEd cAec | B2 B2"^tr" B2 c2 | defg aecA | E2 E2"^tr" E2 E2 | 
 AcBA ecBA | edba agfe | aecA BdcB | A2 A2 A2 :|  