Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:6/8
K:A
['[EA]3 cBA', 'aga fga'  
X:1
L:1/8
M:6/8
K:A
 E | [EA]3 cBA | ecA aec | [EA]3 cBA | BGE dBG | [EA]3 cBA | ecA aec | fga ecA | dBG G2 :: e | 
 aga fga | gba gfe | aga fga | bag a2 (3(e/f/g/) | agf edc | fed cBA | fga ecA | dBG A2 :|  