Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:4/4
K:C
['A4 (BA) ^G2 E4 (^FG)', 'z E2 A4 A2 (AB) c4 c2', 'f4 f2 (ed) e4']  
X:1
L:1/8
M:4/4
K:C
 D2 | A2 A4 (AB) | c2 c4 (cd) | e2 e4 (dc) | B6 z | d2 d4 (cB) | c2 A4 (BA) | ^G2 E4 (^FG) | A4 z | 
 A | f2 f4 (ed) | e2 e4 (dc) | B2 B4 (cd) | (e4 e2) z e | f2 f4 (ed) | e2 A4 (BA) | ^G2 E4 (^FG) | 
 A3 z :| E2 | A4 A2 (AB) | c4 c2 (cd) | e4 e2 (dc) | B3 z | d4 d2 (cB) | c4 A2 (BA) | 
 ^G4 E2 (^FG) | A4 z :| A | f4 f2 (ed) | e4 e2 (dc) | B4 B2 (cd) | e4 e2 z e | f4 f2 (ed) | 
 e4 A2 (BA) | ^G4 E2 (^FG) | A6 z :|  