Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
Q:1/4=100
M:6/8
K:C
['cAA fAA', '(A_B/c/d) cAF']  
X:1
L:1/8
Q:1/4=100
M:6/8
K:C
 f | cAA fAA | aAA cGG | cAA fAA | aAc d2 f | cAA fAA | aAA cGG | (A>GF) fga | ge^c d2 :: c | 
 (A_B/c/d) cAF | (A/_B/cA) BGc |"^NB" (A_B/c/d) cAF | f>(gf/e/)"^tr" d2 c | (A_B/c/d) cAF | 
 (A/_B/cA) BGc | AGF fga | ge^c d2 :|  