Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:4/4
K:A
['E2 A2']  
X:1
L:1/8
M:4/4
K:A
 E2 | A2 A2 A3 A | Ad cB A3 A | A3 G F3 B | E6 E2 | A2 AG F2 FF | EF ED C2 E2 | D3 F E3 G | A6 x2 |]  