Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
Q:1/8=180
M:2/2
K:Amin
['', 'cAAc BGGB', 'c2 ec gcec']  
X:1
L:1/8
Q:1/8=180
M:2/2
K:Amin
 ed |: cAAc BGGB | cAAB cded | cAAc BGGB | (3cBA BG EAAB :| c2 ec gcec | G2 BG dGBG | c2 ec gcec | 
 eaag eaab | geeg ^fdd=f | ecce dBGB | ABcd efed | (3cBA BG EAAB ||  