Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:1/8=220
M:4/4
K:Amin
['A E>AAB cBAG D>GGA Bd c/B/A/G/ A>Bcd', 'c>dec gcec', "c'a g2 dg dg/a/ bg a2 ea", 'ec dBGB cAA :|2 Acea gece d/c/B/A/']  
X:1
L:1/8
Q:1/8=220
M:4/4
K:Amin
 A | E>AAB cBAG | D>GGA Bd c/B/A/G/ | A>Bcd e>dce | d/c/B/A/ GB cAA :|"^2" B | c>dec gcec | 
 Bdge d/c/B/A/ G>B | c>dec gcec | dBGB cAA :|"^3" e | a2 ea ea/b/ c'a | g2 dg dg/a/ bg | 
 a2 ea e>dc>e | d/c/B/A/ GB cAA :|"^4" z | c<eAB Ac/d/ ec | B<dGB GB/c/ dB |1 c<eAc Ac/d/ ec | 
 dBGB cAA :|2 Acea gece | d/c/B/A/ GB cA A2 ||  